粘液
It can reside in pig which have infect with SIV or mucago of air passage.
流感病毒存在于病猪和带毒猪的呼吸道分泌物中。
mucago:粘液
muaf 穗饰扎发带 | mucago 粘液 | mucase 粘蛋白酶 粘多糖酶