海词手机词典

A proventriculus-type of avian infectious bronchitis virus was isolated from diseased fowls in China, and designated as strain IBV - D971. After 120 passages on SPF chicken embryos, an attenuated vaccine was developed and designated as strain IBV-D971P.

播放读音 播放读音

以上内容独家创作,受著作权保护,侵权必究

海词词典,十七年品牌