نتایج جستجو برای: gamma coronavirus
تعداد نتایج: 163120 فیلتر نتایج به سال:
Specimens obtained from 96 dogs with respiratory and enteric clinical signs in Japan were retrospectively examined for group 2 coronavirus by reverse transcription-PCR. Two dogs were found to be positive. Phylogenetic analysis of the spike gene indicated that they were most probably related to the canine respiratory coronavirus recently described in the United Kingdom.
SARS coronavirus injected intratracheally into chickens, turkeys, geese, ducks, and quail, or into the allantoic sac of their embryonating eggs, failed to cause disease or replicate. This finding suggests that domestic poultry were unlikely to have been the reservoir, or associated with dissemination, of SARS coronavirus in the animal markets of southern China.
Severe acute respiratory syndrome (SARS) is an acute infectious disease of the respiratory system. Although a novel coronavirus has been identified as the causative agent of SARS, the pathogenic mechanisms of SARS are not understood. In this study, sera were collected from healthy donors, patients with SARS, patients with severe SARS, and patients with SARS in convalescence. The serum concentra...
فرض کنید g یک گروه متناهی باشد. گراف مولد (gamma(g گرافی با مجموعه رئوس عناصر غیر همانی g است که در آن دو راس a,b مجاور هستند اگر و تنها اگر زیرگروه تولید شده توسط آنها برابر g باشد. در این سخنرانی گراف مولد یک گروه را بررسی می کنیم به ویژه گراف مولد حاصل ضرب پیچشی s توسط { c-{m را بررسی می کنیم که در آن s گروه ساده متناهی و {c-{m گروه دوری از مرتبه m است. عدد صحیح مثبت m را طوری تعیین می کنیم ...
فرض کنید w یک گروه و w=(s) که در آن s = {s1,. . sn | (sisj)mij = 1, 1 ? i,j ? n} و m_ij in z و به ازای هر i, m_ij= 1 در این صورت گروه w را یک گروه کاکستر می نامیم. هر یک از s_i ها را انعکاس نامیم و مجموعه ی همه ی انعکاس ها را به صورت زیر نشان میدهیم. t= {wsw-1 : w in w , sin s} هم چنین فرض کنید w یک گروه و s زیر مجموعه ی کیلی از آن باشد. در این صورت گراف کیلی w نسبت به s را که با gamma(w,...
The serum antibody responses of cattle with respiratory coronavirus infections during the pathogenesis of shipping fever pneumonia were analyzed with different bovine coronavirus antigens, including those from a wild-type respiratory bovine coronavirus (RBCV) strain (97TXSF-Lu 15-2) directly isolated from lung tissue from a fatally infected bovine, a wild-type enteropathogenic bovine coronaviru...
Previously, we conducted a 3-year prospective study to determine the viral causes of acute respiratory tract infections among 495 febrile pediatric outpatients. We collected 495 nasopharyngeal aspirate specimens, and used both real-time PCR assays and viral culture to test each for respiratory viruses other than coronavirus. Here, we used real-time PCR to test the 495 archival specimens for fou...
The N-terminal domain of the coronavirus nucleocapsid (N) protein adopts a fold resembling a right hand with a flexible, positively charged beta-hairpin and a hydrophobic palm. This domain was shown to interact with the genomic RNA for coronavirus infectious bronchitis virus (IBV) and severe acute respiratory syndrome coronavirus (SARS-CoV). Based on its 3D structure, we used site-directed muta...
BACKGROUND The Severe Acute Respiratory Syndrome (SARS) was a newly emerged infectious disease which caused a global epidemic in 2002-2003. Sequence analysis of SARS-coronavirus isolates revealed that specific genotypes predominated at different periods of the epidemic. This information can be used as a footprint for tracing the epidemiology of infections and monitor viral evolution. However, d...
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