There was certain number of T cells, which could be activated by the vaccines and proliferated, in the cystoid nodes of bursa Fabricius.
英
美
鸡法氏囊囊小结髓质中存在一定数量的T细胞,且免疫禽流感灭活油乳剂疫苗可使这些T细胞活化、增殖。
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