Leydig Cells

Very high magnification micrograph of Leydig cells
Image by Nephron (CC BY-SA 3.0

The Leydig cells are the cells within the testicles that produce and secrete testosterone, releasing the hormone directly into the bloodstream.

They are named after German anatomist Franz von Leydig (1821-1908).

(Last modified: 16th Oct 2014)

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