Children have been routinely immunized against polio since 1958.自从1958年以来,儿童都按照常规接种防治小儿麻痹症的疫苗.The monkeys had been immunized with a vaccine made from infected cells.这些猴子已经注射了由受感染的细胞培养而成的疫苗。Detect the tetanus antiserum un...
The monkeys had been immunized with a vaccine made from infected cells.这些猴子已经注射了由受感染的细胞培养而成的疫苗。We should require that every student is immunized against hepatitis B.我们应要求每个学生都注射乙肝疫苗。Children have been routinely immunized...