نتایج جستجو برای: cross inoculation
تعداد نتایج: 511563 فیلتر نتایج به سال:
Microbiological source tracking (MST) methods are increasingly being used to identify fecal contamination sources in surface waters, but these methods have been subjected to limited comparative testing. In this study, 22 researchers employing 12 different methods were provided sets of identically prepared blind water samples. Each sample contained one to three of five possible fecal sources (hu...
In pine wilt disease (PWD), embolized tracheids arise after virulent pine wood nematodes (PWN), Bursaphelenchus xylophilus, invade the resin canal of pine tree; infected pine trees finally die from significant loss of xylem water conduction. We used a compact magnetic resonance imaging system with a U-shaped radio frequency (rf) probe coil to reveal the developmental process of the xylem dysfun...
Closed Circuit Television (CCTV) operators are responsible for maintaining security in various applied settings. However, research has largely ignored human factors that may contribute to CCTV operator error. One important source of error is inattentional blindness--the failure to detect unexpected but clearly visible stimuli when attending to a scene. We compared inattentional blindness rates ...
Studies were conducted to develop mild/avirulent strain of PRSV-W using nitrous acid, sodium azide and UV-radiation for the mutagenic treatments. Among the three mutagens’ sodium azide at 3%, 4%, and 5%, and nitrous acid at 0.1M and 0.125M were proved to be effective in producing mild/avirulent strains of PRSV-W, while UV-radiation was proved to be ineffective. Evaluation on the effectivity of ...
The aim of the study was to find out the host specificity of pigeon pox virus-1 (PPV-1) and fowl pox virus-2 (FPV-2) following cross infection with field strains from Bangladesh. The cross infection was investigated in five groups (n=5) of pigeons and seven groups of chickens (n=5) four weeks of age. Irrespective of route of inoculation each bird received either 0.1 mL of PPV-1 or FPV-2 having ...
غربالگری، جداسازی و بررسی خصوصیات بیوشیمیایی آنزیم کیتیناز مقاوم به دما حاصل از باکتری های بومی کشور
کیتین n(c8h13o5n ) دومین پلیمر مهم از نظر فراوانی درجهان است. کیتین از پیش ساز فعالudp-n- acetylglucoseamine به وسیله آنزیم کیتین سینتاز، سنتز می شود. مقدار کیتین از سخت پوستان در کل محیط های دریایی 1560 میلیون تن تخمین زده شده است. اسکلت خارج سلولی سخت پوستان (پوسته خرچنگ، لابستر ومیگو) به طور متداول از اصلی ترین منابع زیستی کیتین می باشد. میکروارگانیسم ها اولین تجزیه کننده های کیتین در طبیعت ...
The recognition of naturally occurring rhadinoviruses in macaque monkeys has spurred interest in their use as models for human infection with Kaposi sarcoma-associated herpesvirus (human herpesvirus 8). Rhesus macaques (Macaca mulatta) and pig-tailed macaques (Macaca nemestrina) were inoculated intravenously with rhadinovirus isolates derived from these species (rhesus rhadinovirus [RRV] and pi...
Cytomegalovirus (CMV) is a highly species-specific virus that has co-evolved with its host over millions of years and thus restricting cross-species infection. To examine the extent to which host restriction may prevent cross-species research between closely related non-human primates, we evaluated experimental infection of cynomolgus macaques with a recombinant rhesus macaque-derived CMV (RhCM...
Abstract OBJECTIVE To compare the performance of 5 synthetic peptide–based ELISAs with that 3 commercially available immunofluorescent assays (IFAs) for serologic diagnosis anaplasmosis and ehrlichiosis in dogs. SAMPLE A convenience set 109 serum samples obtained before at various times after inoculation 23 dogs were experimentally infected Anaplasma phagocytophilum, platys, Ehrlichia canis, ch...
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