نتایج جستجو برای: 1 gene is a hypervariable region among ibv serotypes
تعداد نتایج: 15067648 فیلتر نتایج به سال:
To date, multiple serotypes and genotypes of infectious bronchitis virus (IBV) have been isolated and identified. In order to provide more information on the viral evolution of IBVs, a new virulent strain named GX-NN09032, isolated from Guangxi, China, in 2009, was sequenced, and phylogenetic and recombination analyses were conducted. Furthermore, potential recombination events associated with ...
280 Characterization of infectious bronchitis virus isolates from backyard flocks. AAAP abstract † 281 Recombination in avian gamma-coronavirus infectious bronchitis virus (IBV). 282 Evaluation of possible interference between Arkansas and Massachusetts vaccine serotypes. AAAP abstract † 283 Interactions between multivalent attenuated live infectious bronchitis virus (IBV) vaccines in one-day-o...
adaptation of the lord of the rings is considered by many to be among the greatest, most successful and at the same time most popular of the above mentioned trend so far. it is my intention to look at the success and popularity of this epic fantasy in the light of the 9/11 attacks and the war on terror context of g. w. bush’s aura. in so doing i aim at bringing into the light the determining fa...
the effect of the presence of perforations on he stresses of a plate is a problem which is of great interest in structural design and in the mathemattical theory of elasticity. among the many hole patterns that are likely to require consideration is the ring of equally spaced circular holes. the present worke investigates stress & strain analysis of a thin isotropic circular plate containing a ...
chicken infectious bronchitis virus (ibv) causes severe respiratory and renal dysfunction in chickens. in the present study, we used reverse transcription-polymerase chain reaction (rt-pcr) to amplify the nucleocapsid (n) protein gene of strain massachusetts (mass) h120 of ibv that is commonly used in the vaccine production in iran. the pcr product with the expected size of 1.2 kb was cloned in...
Infectious bronchitis (IB) is a highly contagious disease involving mostly upper respiratory tract in chickens, leading to significant economic losses in the poultry industry worldwide. One of the major concerns regarding to IB is the emergence of new types of infectious bronchitis viruses (IBVs). The purpose of this study was to identify the IBVs isolated from Iranian broiler chickens with res...
Avian infectious bronchitis virus (IBV) causes tremendous economic losses to the poultry industry worldwide. Different serotypes of this virus show little cross-protection. The present study investigated the relationship between differences in the genotype based on the N-terminus of the spike protein and the protection provided by vaccination with IBVs. Cross-immunization tests were performed u...
infectious bronchitis virus (ibv) is a contagious pathogen in fowl that results in economic loss in the poultry industry. in this study, the amino acids sequences of three structural proteins m, n, and s1 for five iranian ibv isolated during 1998-2011 have been analyzed. conserved and variable regions, hydrophobic characteristics and identity matrix were determined after alignment by bioedit ve...
avibacterium paragallinarum is gram-negative bacteria that cause infectious coryza (ic), an acute respiratory disease of chickens. despite vaccination of layer and breeder farms of iran against ic, they are still experiencing the disease clinically and there is no knowledge of serotypes prevalence of this bacterium in this country. this study designed to determine serovar identity by molecular ...
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