There were lymphoid leukosis virus and group specific antigen in the follicles with BA dying which was highest in content from the 3rd to 4th month of PI.
BA法染色表明法氏囊一直存有病毒和群特异性抗原，以接毒后3～4个月含量最高。
By using avian influenza polyclonal antibody and H9 subtype-specific monoclonal antibody, a H9 subtype specific antigen capture ELISA was developed for detection of H9 subtype avian influenza virus.
采用禽流感病毒多克隆抗体及H9亚型特异性单克隆抗体，研究建立H9亚型特异性抗原捕捉elisa检测方法，用于检测H9亚型禽流感病毒。
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