2026-03-21 17:15 浏览次数 16
白血病病毒
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。