一种垂体前叶腺产生的激素，可促进身体对脂肪的利用，是内啡肽的前体。
A hormone produced by the anterior pituitary gland that promotes the utilization of fat by the body and is a precursor to the endorphins.
在昆虫中，胆固醇不仅是细胞膜的重要成分之一，也是昆虫蜕皮激素生物合成的前体。
In insects, cholesterol is not only one of the main components of cell membranes, but also a precursor of ecdysone biosynthesis.
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