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Ley·dig cell | \ ˈlī-dig- 
\
\variants:
also Leydig's cell \ -dig(z)- \
\Medical Definition of Leydig cell
: a cell of interstitial tissue of the testis that is usually considered the chief source of testicular androgens and especially testosterone
— called also cell of Leydig, interstitial cell of Leydig
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