F. von Leydig (1821-1908), German anatomist
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1. clusters of epithelioid cells constituting the endocrine tissue of the testis, which elaborate androgens, chiefly testosterone; called also interstitial c's or interstitial c's of Leydig and interstitial glands. 2. mucous cells that do not pour their secretion out over the surface of the epithelium.Medical dictionary. 2011.