摘要
The spike gene(S)of Infectious bronchitis virus(IBV)CK/CH/LDL97Ⅰ/97 isolate was amplified,cloned,sequenced and analyzed.Results showed that the S gene was 3501 bp encoding a polypeptide of 1167 amino acids.The precursor of the S protein was cleaved into S1 and S2 fragments,which comprised 541 and 62...
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单位中国农业科学院哈尔滨兽医研究所; 新疆农业大学; 兽医生物技术国家重点实验室