نتایج جستجو برای: isolate specificity
تعداد نتایج: 188815 فیلتر نتایج به سال:
A single mutation in Taiwanese H6N1 influenza hemagglutinin switches binding to human‐type receptors
In June 2013, the first case of human infection with an avian H6N1 virus was reported in a Taiwanese woman. Although this was a single non-fatal case, the virus continues to circulate in Taiwanese poultry. As with any emerging avian virus that infects humans, there is concern that acquisition of human-type receptor specificity could enable transmission in the human population. Despite mutations...
The bacterium Burkholderia pseudomallei causes melioidosis, a rare but serious illness that can be fatal if untreated or misdiagnosed. Species-specific PCR assays provide a technically simple method for differentiating B. pseudomallei from near-neighbor species. However, substantial genetic diversity and high levels of recombination within this species reduce the likelihood that molecular signa...
The efficacy of the string culture test to isolate Helicobacter pylori from gastric secretions of 28 volunteers was studied. With the urea breath test (UBT) as the "gold standard," the string culture test showed a sensitivity of 75% and a specificity of 100%. The results of string culture did not correlate with the UBT results, with serum antibody levels, or with the pH levels of gastric secret...
The present study was aimed to isolate the abundant Staphylococcus aureus produce asparaginase and evaluate efficacy of purified L-ASNase against a breast cancer cell line. From one hundred local isolates S. which subjected primary screening processes for production, thirty-seven with maximum ability hydrolysis zone in (the ratio Z more than 10 mm) were selected secondary screening. It has been...
conclusions: considering the low rate of ceftriaxone resistance amongst isolated pneumcocci.in this study, only ceftriaxone treatment of adult patients with invasive pneumococcal infections (other than cns infections) is sufficient; but pediatric patients and patients with cns infections should be treated with ceftriaxone and vancomycin. apparently, diminution of vancomycin use can be resulted ...
Preparative polyacrylamide gel electrophoresis was used to isolate individual components of an alkaline-soluble-water-soluble fraction of the cell wall of Blastomyces dermatitidis yeast phase. One component isolated demonstrated exceptional specificity and reactivity when tested on guinea pigs infected with B. dermatitidis. This component displayed no cross-reactivity when tested on animals inf...
background: toxoplasmosis is a zoonotic disease with widespread distribution throughout the world. it is caused by the protozoan parasite toxoplasma gondii . as laboratory diagnosis of toxoplasmosis is not straightforward, this study was aimed to compare the sensitivity and specificity of conventional and unconventional methods of diagnosis based on the measurement of igm and igg for determin...
conclusions pivka-ii was as efficient as afp when used as a single marker for hcc screening and the combination of two biomarkers gave a better performance. results the sensitivity and specificity of pivka-ii were 74.6% and 67.8% at a cutoff of 40 mau/ml and 64.2% and 89.7% at a cutoff of 200 mau/ml. the sensitivity and specificity of afp were 76.7% and 65.0% at a cutoff of 20 ng/ml and 60.4% a...
Although the human hCCR-5 chemokine receptor can serve as a co-receptor for both M-tropic (ADA and BaL) and dual-tropic (89.6) strains of human immunodeficiency virus type 1 (HIV-1), the closely related mouse mCCR-5 homolog is inactive. We used chimeric hCCR-5-mCCR-5 receptor molecules to examine the functional importance of the three extracellular domains of hCCR-5 that differ in sequence from...
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