此时，腺体主细胞的比率也相应增加，由最初的67.7％增加到72.37％。
At the same time, the percentage of chief cells reached from original 67.7% (1kg) to 72.37%(20kg).
脑壳内脑基部的小蚕豆状腺体组织，主司分泌关系猪体生长和机能的重要激素。
A tiny pea shaped gland found in the skull at the base of the brain. The gland secretes hormones important to bodily growth and function.
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