通過(guò)禽胚減毒的,禽化的

At least one avian disease pathogen has been found. 已經(jīng)發(fā)現(xiàn)至少有一種禽病的病原體。

Can influenza vaccine prevent avian flu? 流感疫苗可預(yù)防禽流感嗎?

How is avian influenza transmitted? 禽流感是怎樣傳染的?

For example: he is an expert in avian studies. 他是鳥(niǎo)類研究的專家。

Selenium Deficiency the Inner Cause of Avian Flu? 是什么導(dǎo)致禽流感?

Avian Influenza but Not via Wild Birds? 禽流感確實(shí)由野鳥(niǎo)傳播?