Female mice that lacked an estrogen receptor were born with longer digits, and those that did not have testosterone had shorter, superfeminine digits.

而缺少雌激素受体的雌性老鼠生来指爪就更长，那些没有雄激素老鼠的指爪则更短，并且非常女性化。

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One theory is that vitamin D interferes with the effect of the androgen receptor, which is stimulated by hormones such as testosterone and implicated in prostate cancer.

BBC: Vitamin D hope in prostate cancer