However, infections also trigger another reaction called cell-mediated immunity, in which certain white blood cells target and destroy infected cells.
然而，感染还能触发另一种反应叫细胞介导免疫性，某些白细胞靶和破坏感染的细胞。
Infection of host cells by virus is the key for the virulence, virus particles infect the host cells by binding to cellular receptor and by the receptor-mediated membrane fusion reaction.
病毒感染宿主细胞是病毒致病的关键所在，病毒感染细胞需要与其受体相结合，介导其与细胞的膜融合反应。
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