農耕民族的大部分人在兩歲以後都缺乏半乳糖水解酶。。。

來源: 禦用文人於 2017-08-24 09:48:07 [舊帖] [給我悄悄話] 本文已被閱讀：次

控製半乳糖水解酶的基因 turn off.

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