Leydig's cell(redirected from Leydig's cell tumor)
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interstitial cell of the testis, which secretes testosterone.
Leydig's cell tumor
a variant of ovarian sex cord-stromal tumors which are composed of cells that resemble those of Leydig's cells in the testicle. Some of them secrete androgenic hormones, especially in the mare. See also interstitial cell tumor.