有個不太明白：瘋牛病的病原體就是一種蛋白質，它好像能被腸胃吸收而不被破壞，然後轉移到腦部？

來源: 文學狗熊於 2016-06-23 01:04:37 [舊帖] [給我悄悄話] 本文已被閱讀：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.