Template:Corpus Luteum Vignette

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Historic Embryology
Regnier de Graaf.jpg

Regnier de Graaf (1641 – 1673) first observed histologically the corpus luteum in the ovary of a cow by its defining yellow structure. The yellow colour is caused by the accumulation of steroidal hormones.

Catchpole HR. Regnier De Graaf 1641-1673 (1940) Bull. Hist. Med. 8(9): 1261 - 1300. Corpus lutem