Increasing prevalence from 1 3% (2006) to 2 5% (2008) shows emerg

Increasing prevalence from 1.3% (2006) to 2.5% (2008) shows emergence of MRSA ST398 in humans in Austria.”
“Background: The impact of timing of appropriate antibiotic initiation for critically ill children with severe bacterial community-acquired pneumonia (CAP) is unknown. We hypothesized that longer time to initiation of correct parenteral antibiotic would be associated with longer durations of mechanical ventilation, intensive care unit length of stay, and hospital length of stay.

Methods: selleck products We retrospectively reviewed medical records of children admitted

to Nationwide Children’s Hospital between January 2004 and December 2006 with bacterial CAP treated with mechanical ventilation, excluding those with documented viral infection. Time to correct antibiotic was defined as time from presentation to any emergency department to the initiation of a parenteral antibiotic to which cultured pathogens were susceptible.

Results: In all, 45 patients, median age 17 months, were identified. Median time to correct antibiotic was 10.3 hours, with 71% of patients receiving selleck correct empiric therapy. After adjusting for severity

of illness, longer time to correct antibiotic was independently associated with longer hospital stay (P = 0.007). For the 23 patients in the cohort for whom pneumonia was the primary diagnosis, longer time to correct antibiotic was independently associated with longer durations of mechanical ventilation (P = 0.01), intensive care unit stay (P = 0.001), and hospital stay (P = 0.006).

Delays in antibiotic administration as short as 2 to 4 hours were associated with adverse outcomes in this group.

Conclusions: In our critically ill children with severe bacterial CAP, longer delays in receipt of appropriate empiric antibiotics were independently associated with adverse outcomes.”
“Children with neurodevelopmental disabilities, such as cerebral palsy, frequently have associated oral motor dysfunction, which leads to feeding difficulties, SCH727965 risk of aspiration, prolonged feeding times, and malnutrition with its attendant physical compromise. The authors propose a comprehensive multidisciplinary assessment, including neurological and dysphagia examination and ear, nose, and throat examination, to evaluate clinical indicators and severity of feeding impairment in children affected by neurodevelopmental disorders. A representative sample of 40 children with cerebral palsy (spastic, dyskinetic, or mixed), intellectual disability, and feeding problems was included in the study. A specific multidisciplinary evaluation and standardized mealtime observation in patients with cerebral palsy appear feasible and appropriate to recognize proactive indicators of dysphagia and to establish personalized programs of gastric and rehabilitative interventions.

The outbreak was attributed to Venezuelan equine encephalitis vir

The outbreak was attributed to Venezuelan equine encephalitis virus (VEEV) subtype IE, not previously associated with equine disease and death. To better understand the ecology of this VEEV strain in Chiapas, we experimentally

infected 5 species of wild rodents and evaluated their competence as reservoir and amplifying hosts. Rodents from 1 species (Baiomys musculus) showed signs of disease and died by day 8 postinoculation. Rodents from the 4 other species (Liomys salvini, Oligoryzomys fulvescens, Oryzomys couesi, and Sigmodon hispidus) became viremic but survived and developed neutralizing antibodies, indicating that multiple species may contribute to VEEV maintenance. By infecting numerous rodent GSK1210151A in vitro species and producing adequate viremia, VEEV may increase its chances of long-term persistence in nature and could increase risk for establishment in disease-endemic areas and amplification outside the disease-endemic range.”
“Background: Malaria still remains

a life-threatening disease worldwide P505-15 price causing between 190 and 311 million cases of malaria in 2008. Due to increased resistance to sulphadoxine-pyrimethamine (SP), the Ministry of Health in Malawi, as in many sub-Saharan African countries, changed the malaria treatment policy to use artemisinin-based combination therapy (ACT). In order to optimize the correct use of this drug, and protect against the development of the parasite’s resistance, it is important to assess the knowledge and practices of medical practitioners on the use of ACT and its impact on adherence to new treatment policy guidelines.

Methods: A cross-sectional LY294002 survey was conducted to assess the knowledge and perceptions of Malawian medical doctors and pharmacists on the use of ACT and the drivers of treatment choice

and clinical treatment decisions. Medical doctors and pharmacists who are involved in managing malaria patients in Malawi were recruited and a self-administered questionnaire was used to obtain information on socio-demographic characteristics of the study participants, knowledge on ACT, source of information on ACT and methods used to decide on the treatment of patients with malaria.

Results: Most of the participants (95.7%) know at least one form of ACT, 67.4% reported that different forms of ACT have different characteristics, 77.3% reported that there are special formulations for children. The most commonly mentioned ACT was artemether-lumefantrine (AL), by 94.6% of the participants and 75.0% of the participants indicated that they prefer to prescribe AL. 73.9% of participants had ever received information on ACT. However, only 31.5% had received training on management of malaria using ACT. There were 71.7% respondents who had heard of ACT causing side effects. Only 25.0% of the participants had received training on how to report SAEs.

There are significant differences between US and international cr

There are significant differences between US and international craniofacial surgeons in terms of demographics and practice, with more US surgeons performing fewer major craniofacial osteotomies. There is a significant gender disparity, which warrants further study.”
“Nanoparticles prepared of human serum albumin (HSA) represent promising carriers for drug delivery. Desolvating procedure is a common method to obtain protein-based particles. However process parameters have a great influence on size, size distribution and particle yield of the resulting formulation. Therefore, it is crucial to investigate their effects on particle preparation. This study is focused on the

influence of different desolvating agents on the resulting particle characteristics and cytotoxicity in cell culture. Another aspect of the study was the influence of different stirring rates, pre-stirring of the HSA solution and the GSK1838705A supplier continuous addition of desolvating agent during the preparation process. The results indicate that it is possible to predict the particle size

depending on dielectric constant of the desolvation medium. Remarkably, combination of methanol and ethanol used as desolvating agent was able to produce very small spherical HSA nanoparticles in a size range between 50 and 80 nm.”
“Objective. To investigate the preventive effect of locally applied sodium bicarbonate on bisphosphonate-related osteonecrosis of the jaw (BRONJ).

Study Design. Thirty-six Sprague-Dawley rats were divided into 4 groups. Animals in group I received 0.1 mg/ kg sterile saline 3 times per week for 8 weeks. Groups II, III, and IV received intraperitoneal zoledronate injection in https://www.selleckchem.com/products/S31-201.html the same manner with the same frequency and duration. The right first molar tooth was extracted in groups III and IV. One mL 8.4% sodium bicarbonate (SB) was applied to the extraction socket at the time NSC 136476 of extraction in group IV. The effect of locally applied SB as an alkalizing agent was evaluated by histomorphometric analysis.

Results. BRONJ was observed in none of the animals in the control groups, 67% of the

animals in the tooth extraction group, and none of the animals in the local SB application group (P < .01).

Conclusions. Administration of locally applied SB had positive effects on the prevention of BRONJ in animals, but further studies are required to verify the effectiveness of this form of treatment before its use in humans.”
“Purpose Partial pancreatico-duodenectomy is the standard treatment for malignancies of the pancreatic head. We describe a technical modification with a retrograde dissection of the pancreatic head as a novel surgical approach.

Methods Retrograde resection of the pancreatic head is performed starting with the uncinate process after division of the first jejunal loop and transection of the pancreas as the last operative step of the resection. Technical aspects and possible advantages for this procedure are discussed.


“PURPOSE: To analyze corneal astigmatic changes after impl


“PURPOSE: To analyze corneal astigmatic changes after implantation of intrastromal corneal ring segments (ICRS) in keratoconic eyes using the Alpins vectorial method

SETTING: Vissum Corporation, Alicante. Spain.

METHODS: Keraring

ICRS were implanted in eyes with a diagnosis of keratoconus. One of 3 surgeons performed the ICRS implantations using femtosecond technology and following the same protocol Visual, refractive, keratometric, and corneal aberrometric changes were evaluated during a 12-month follow-up Corneal astigmatic changes were also analyzed using the following Alpins vectorial components. targeted induced astigmatism (TIA), surgically https://www.selleckchem.com/products/Pitavastatin-calcium(Livalo).html induced astigmatism (SIA), difference vector, magnitude of error, flattening effect, and torque.

RESULTS: Postoperatively, there was significant visual improvement (P = .03), significant central flattening (P = .03), and a significant INCB024360 reduction in manifest astigmatism (P<.01). The magnitude of SIA vector was significantly lower than the TIA postoperatively (P >= 02) The mean magnitude of the difference vector 3 months postoperatively

was + 2.96 diopters (D) +/- 1.68 (SD). The mean magnitude of error remained negative and unchanged (P >=.10). The mean magnitude of the flattening effect was significantly lower than the TIA at all postoperative visits (P<.01) The mean magnitude of torque vector was 1.21 +/- 0.98 D at 3 months. Significant negative correlations were found between preoperative corneal astigmatism and the magnitude of error and AZD9291 chemical structure difference vector at all postoperative visits.

CONCLUSION: Although ICRS implantation significantly reduced the magnitude of corneal astigmatism, there was a trend toward undercorrection and the meridian of correction was not appropriate in all cases, showing the need for nomogram adjustments.

Financial Disclosure: No author has a financial or proprietary interest in any material or method mentioned.

J Cataract

Refract Surg 2010; 36.1562-1572 (C) 2010 ASCRS and ESCRS”
“Strong magnetic fields e.g., 10 T are now frequently used during materials preparation. In the present paper, a method of metal-ceramics graded materials preparation is proposed by applying a strong magnetic field with a high gradient. Experimental and theoretical analyses are performed to investigate the effect of the strong magnetic field on the migration and interaction behavior of diamagnetic oxide particles in a liquid metal. The migration of micrometer or sub-micrometer sized particles is clearly enhanced by the magnetic field gradient. After being treated by the strong magnetic field, a self-assembly structure of the particles is achieved. Various factors such as the magnetic dipole-dipole interaction and chain-chain interaction, are governing the particles assembly.

(C) 2011 American Institute of Physics [doi:10 1063/1 3536788]“<

(C) 2011 American Institute of Physics. [doi:10.1063/1.3536788]“
“The phytochemical constituents and antimicrobial properties of the aqueous extract of Cassia arereh stem-bark were evaluated. The extract was subjected to qualitative chemical screening of active chemical constituents and disc diffusion method was performed to determine the antimicrobial Pfizer Licensed Compound Library price properties. The results revealed the presence of tannins, phlobatannins, carbohydrate, saponin, flvonoids, terpenes and steroids while anthraquinones, alkaloids and cardiac glycosides were not detected. The extracts (100, 200, 400 and 800 mg/ml) inhibited the growth of Staphylococcus aureus, Bacillus subtilis, Salmonella typhi, Pseudomonas

aerogenosa and Enterobacter species. However, Escherichia coli, Klebsiella pneumoniae, Corynebacterium pyogenes and Candida albicans were resistant. The minimal inhibitory concentration (MIC) and minimal bactericidal concentration (MBC) values were 50 mg/ml for S. aureus and B. subtilis, and 100 mg/ml for P. aeurogenosa. It was concluded that the aqueous extract of C. arereh stem-bark contained active principles having antibacterial properties and thus support the folkloric use of the plant.”
“A poly(acrylamide) (PAM) aqueous dispersion with high solid was successfully synthesized

through two-phase polymerization of acrylamide (AM) in aqueous poly(ethylene glycol) (PEG) solution. To prepare stable PAM aqueous dispersion, PF-04929113 nmr the effects of initiator, monomer and PEG concentration on the AR-13324 order stability of the aqueous two-phase polymerization system were investigated in detail. Dynamic light scattering (DLS) was applied to study the evolution of the size and size distribution of the aqueous PAM droplet in the initial stage of polymerization. A droplet aggregation period was found in the initial stage, in which the PAM coagulum is easy to be generated below the conversion of about 5% due to high

polymerization rate. By analyzing the effects of PEG on the stability of this polymerization system, it was found that PEG plays both precipitant and stabilizer role. When PEG concentration ranges from 12 to 24%, increasing its use would pro-mote the droplet stabilization; however, when PEG concentration exceeds 28%, increasing its use may accelerate the droplet formation which does not further favor the droplet stabilization. Furthermore, the viscosity evolution during the polymerization under various reaction conditions was determined by rotational viscometer on line. When monomer concentration exceeded 8%, increasing the initiator or monomer concentration would result in that the polymer produced in the continuous phase could not be separated in time due to the high viscosity. All these results demonstrated that the slower the polymerization rate is, the more stable PAM aqueous dispersion will be. (C) 2011 Wiley Periodicals, Inc.

5 days while for patients with PASI scores of >= 13, it was si

5 days while for patients with PASI scores of >= 13, it was significantly shorter at 120.1 days. Five adverse events were recorded in three patients, but were not serious. The total Skindex-16 score significantly decreased especially in the “”emotions’ and “”functioning”" categories. GHQ scores also significantly decreased in “”somatic symptoms,”"”"anxiety and insomnia,”" and “”depression”". With regard to patients’ satisfaction with their therapy,

88.5% of the patients reported “”satisfied”" or “”slightly satisfied”". These results demonstrate that low-dose, short-term administration of CyA (3 mg/kg per day) is one of the best therapies for psoriasis patients with PASI scores of < 13, while QOL assessment is a very selleck kinase inhibitor useful tool for evaluating the value of therapy.”
“Objective: Surrogate markers are often used in clinical trials if too much time or expense is involved to observe

the effect of treatment on patient-important outcomes. We wished to estimate the ultimate effects of treatment when randomized trials have addressed only a surrogate marker, and additional, independent studies evaluate the association between the surrogate and the final outcome.

Study Design and Setting: We show how to calculate the overall effect of treatment on a final outcome, together with its standard error and confidence interval. The methods are illustrated with Selleckchem Mizoribine data on the effect of therapy on hepatitis B seroconversion, a surrogate marker, and its association with patient-important outcomes (cirrhosis and liver cancer).

Results: We find that CX-6258 in vivo the effect of treatment on the final outcome may be small even if there are strong associations between treatment and the surrogate and between the surrogate and the patient-important outcome.

Conclusion: Apparently, robust treatment effects on surrogates are likely to lead to small and uncertain effects on patient-important outcomes. We should be cautious in advising patients to adopt a therapy when compelling evidence is restricted to its impact on surrogate outcomes, particularly

if that therapy may be toxic or otherwise cause harms. (c) 2012 Elsevier Inc. All rights reserved.”
“Frontonasal dysplasia is a rare entity. It has characteristic physical deformities: hypertelorism, broad nasal root, median facial cleft of the upper lip or palate, clefting of the nasal alae, poorly formed nasal tip, cranium bifidum occultum, and a widow’s peak hairline. Fibrous dysplasia is a benign bone tumor in which normal bone is replaced by fibrous, poorly formed osseus tissues. We present a patient with frontonasal dysplasia who desired correction of her hypertelorism. Incidentally, fibrous dysplasiawas found in her left orbit complicating surgical correction. In addition, the patient has velopharyngeal insufficiency and a class III malocclusion. The interplay of all these craniofacial defects makes the sequencing and timing of surgery important in this unique patient.

The prepared grafted antioxidant improves the mechanical properti

The prepared grafted antioxidant improves the mechanical properties of NBR vulcanizate. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 119: 2461-2467, 2011″
“Rheological characterization of inks for the inkjet printing application has been buy VS-6063 considered to be essential with dissemination of applying the inkjet printing technology into many related industries. In this study, the high concentrated Ag suspension was prepared using poly(acrylic acid) as both a polyelectrolyte and a polymeric dispersant, and rheological properties of the suspension such as shear stress, shear viscosity, and dynamic moduli were examined using a rotational rheometer. The difference

of rheological properties was investigated with different concentrations of the polyelectrolyte. The shear thinning effects and yield behavior of suspension were analyzed using rheological constitutive equations of state. (C) 2010

American Institute of Physics. [doi:10.1063/1.3511682]“
“Myasthenia gravis (MG) and paraneoplastic cerebellar degeneration (PCD) are immune-mediated syndromes that can represent paraneoplastic disorders. We report a patient with history of ovarian carcinoma that presented with ptosis, diplopia and gait ataxia. Neurophysiological examination and laboratory tests revealed the presence of MG and PCD. An integrated FDG-PET/contrast-enhanced CT scan showed tumor recurrence. This is to the Tariquidar best of our knowledge the first association of MG and PCD with recurring ovarian carcinoma.”
“This work investigates the effect of the addition of a well-known antioxidant, alpha-tocopherol in poly (lactic acid) flexural and barrier properties. For that purpose, films of poly(lactic acid) enriched with 0, 2.2, and 4.4% of alpha-tocopherol were prepared. Differential scanning calorimetry, thermogravimetric analysis, and dynamic mechanical analysis were used to characterize the changes in the mechanical and thermal properties. The sorption of oxygen and carbon dioxide in the prepared enriched films of poly(lactic

acid) was measured at different temperatures between 283 and 313 K and pressures up to atmospheric pressure using a Quartz Crystal https://www.selleckchem.com/products/dibutyryl-camp-bucladesine.html Microbalance. Although no significant changes were found in the mechanical and thermal properties, the addition of alpha-tocopherol promotes an increasing in the oxygen sorption and the convex shape of the isotherms indicate a strong interaction gas-polymer. Regarding the sorption of carbon dioxide, no pronounced effect was found. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 119: 2468-2475, 2011″
“Random networks of carbon nanotubes and metallic nanowires have shown to be very useful in the production of transparent, conducting films. The electronic transport on the film depends considerably on the network properties, and on the interwire coupling.

When two droplets approach each other due to Coulombic attraction

When two droplets approach each other due to Coulombic attraction, a liquid bridge is formed between them. We postulate that if the applied electric field is weaker than a certain critical level, the two droplets coalesce instantaneously when the charges are exchanged and redistributed

through this liquid bridge.”
“Purpose of reviewUrologic pain conditions such as chronic prostatitis/chronic pelvic pain syndrome, interstitial cystitis/bladder pain syndrome and chronic orchialgia are common, yet diagnosis and treatment are challenging. Current therapies often fail to show efficacy in randomized controlled studies. Lack of efficacy may be due GDC-0973 cost to multifactorial causes and heterogeneity of patient presentation. Efforts have been made to map different phenotypes in patients with 5-Fluoracil DNA Damage inhibitor urologic pain conditions to tailor more effective therapies. This review will look at current

literature on phenotype classification in urologic pain patients and their use in providing effective therapy.Recent findingsThere has been validation of the UPOINT’ system (urinary symptoms, psychosocial dysfunction, organ specific findings, infection, neurologic/systemic and tenderness of muscle) to better categorize male chronic prostatitis/chronic pelvic pain syndrome and interstitial cystitis/bladder pain syndrome. Refinement of domain systems and recent cluster analysis has suggested possible central

processes involved in urologic pain conditions similar to systemic pain syndromes such as fibromyalgia, chronic fatigue and irritable selleck inhibitor bowel syndrome.SummaryDomain characterization of urologic pain conditions via phenotype mapping can be used to better understand causes of chronic pain and hopefully provide more effective, targeted and multimodal therapy.”
“Ataxia with oculomotor apraxia type 2 (AOA2) is one of the most frequent autosomal recessive cerebellar ataxias. Oculomotor apraxia refers to horizontal gaze failure due to deficits in voluntary/reactive eye movements. These deficits can manifest as increased latency and/or hypometria of saccades with a staircase pattern and are frequently associated with compensatory head thrust movements. Oculomotor disturbances associated with AOA2 have been poorly studied mainly because the diagnosis of oculomotor apraxia was based on the presence of compensatory head thrusts. The aim of this study was to characterise the nature of horizontal gaze failure in patients with AOA2 and to demonstrate oculomotor apraxia even in the absence of head thrusts. Five patients with AOA2, without head thrusts, were tested in saccadic tasks with the head restrained or free to move and their performance was compared to a group of six healthy participants. The most salient deficit of the patients was saccadic hypometria with a typical staircase pattern.

Results: Frequency of blood group ‘B’ was significantly higher in

Results: Frequency of blood group ‘B’ was significantly higher in patients with severe malaria compared to the uncomplicated

cases (P < 0.0001; OR = 4.09) and healthy controls (P < 0.0001; OR = 2.79). Irrespective of the level of clinical severity, blood group ‘B’ was significantly associated with cerebral malaria (P < 0.0001; OR = 5.95), multi-organ dysfunction (P < 0.0001; OR = 4.81) and non-cerebral Selleckchem Staurosporine severe malaria patients (P = 0.001; OR = 3.02) compared to the uncomplicated category. Prevalence of ‘O’ group in uncomplicated malaria (P < 0.0001; OR = 2.81) and healthy controls (P = 0.0003; OR = 2.16) was significantly high compared to severe malaria. Meta-analysis of previous studies, including the current one, highlighted the protective nature of blood SBE-β-CD group ‘O’ to severe malaria (P = 0.01). On the other hand, carriers of blood group ‘A’ (P = 0.04) and ‘AB’ (P = 0.04) were susceptible

to malaria severity.

Conclusions: Results of the current study indicate that blood group ‘O’ is associated with reduced and ‘B’ blood group with increased risk of development of severe malaria in Odisha, India. Meta-analysis also supports the protective nature of blood group ‘O’ from severe falciparum infection.”
“Rubber toughened poly(lactic acid) (PLA) was prepared by blending with natural rubber (NR)-based polymers. The blends contained 10 wt % of rubber and melt blended with a twin screw extruder. Enhancement of impact strength of PLA was primarily concernced. This study was focused on the effect of rubber polarity, rubber viscosity and molecular weight on mechanical properties of the blends. Three types of rubbers were used: NR, epoxidized natural rubber (ENR25 and ENR50), and natural rubber grafted with poly(methyl methacrylate) (NR-g-PMMA). Effect of viscosity and molecular weight of NR, rubber mastication with a two-roll mill was investigated. It was found that all blends showed higher impact strength than PLA and NR became the best toughening agent. Viscosity and molecular weight of NR decreased with increasing number of mastication. Impact strength of PLA/NR blends increased after applying

NR mastication due to appropriate particle size. DMTA and DSC characterization were determined as click here well. (c) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011″
“A maxillary sinus mucocele is an infrequent but benign lesion that develops from the obstruction of a seromucous glandular duct of the maxillary sinus mucosa. This clinical entity is generally asymptomatic and self-limited. Mucoceles are described as rounded dome-shaped soft tissue masses frequently located on the floor of the maxillary sinus. In this paper, we present a case of a slightly radiopaque well defined shadow arising from the left maxillary sinus floor that produced the root resorption of the upper second left molar. After the surgical removal of the lesion through a Caldwell-Luc approach, histologic study confirmed the initial diagnosis of mucocele.

These proteins had a CRIB motif or PH domain, a TBC domain, a PRO

These proteins had a CRIB motif or PH domain, a TBC domain, a PRONE domain, a DENN domain, or GDI signatures, respectively. By bootstrap analysis, an unrooted consensus phylogenetic tree was constructed which indicated that VvRopGDIs and VvRopGEFs-but not VvRopGAP-belonged to the same clade, and that VvRabGEF1 protein was more closely related

to VvRopGAPs than to the other putative VvRab-interacting proteins. Twenty-two genes out of 28 encoding putative VvRop- and VvRab-interacting proteins could be located on identified grapevine chromosomes. Generally one gene was VX-770 datasheet anchored on one chromosome, but in some cases up to four genes were located on the same chromosome. Expression patterns of the genes encoding putative VvRop- and VvRab-interacting proteins were also examined using a newly developed tool based on public expressed sequence tag (EST) database analysis. Expression patterns were sometimes found to be specific to an organ or a developmental stage. Although some limitations exist, the use of EST database analysis is stressed, in particular in the case of species where expression data are obtained

at high costs in terms of time and effort.”
“Background: Alternative arrangements of chromosome LY2606368 2 inversions in Anopheles gambiae are important sources of population structure, and are associated with adaptation to environmental heterogeneity. The forces responsible for their origin and maintenance are incompletely understood. Molecular characterization of

inversion breakpoints provides insight into how they arose, and provides the basis for development of molecular karyotyping methods useful GW4869 in future studies.

Methods: Sequence comparison of regions near the cytological breakpoints of 2Rb allowed the molecular delineation of breakpoint boundaries. Comparisons were made between the standard 2R+(b) arrangement in the An. gambiae PEST reference genome and the inverted 2Rb arrangements in the An. gambiae M and S genome assemblies. Sequence differences between alternative 2Rb arrangements were exploited in the design of a PCR diagnostic assay, which was evaluated against the known chromosomal banding pattern of laboratory colonies and field-collected samples from Mali and Cameroon.

Results: The breakpoints of the 7.55 Mb 2Rb inversion are flanked by extensive runs of the same short 72 bp) tandemly organized sequence, which was likely responsible for chromosomal breakage and rearrangement. Application of the molecular diagnostic assay suggested that 2Rb has a single common origin in An. gambiae and its sibling species, Anopheles arabiensis, and also that the standard arrangement 2R+(b)) may have arisen twice through breakpoint reuse. The molecular diagnostic was reliable when applied to laboratory colonies, but its accuracy was lower in natural populations.