Sheep foetal lung cells can be passaged for forty times, and each subculture can be used to isolate virus, so it is a very practical method of isolating OPPV.是什么意思_Sheep foetal lung cells can be passaged for forty times, and each subculture can be used to isolate virus, so it is a very practical method of isolating OPPV.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句