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Wilhelm August Oscar Hertwig (1849-1922)
By: Benjamin Garcia, Katherine Brind'Amour
| Published: Nov 01, 2007
Wilhelm August Oscar Hertwig contributed to embryology through his studies of cells in development and his discovery that only one spermatozoon is…
PeopleFertilizationBiographySpermOva
Nicolaas Hartsoeker (1656-1725)
By: Cera R. Lawrence
| Published: Sep 26, 2008
Nicolaas Hartsoeker, a Dutch astronomer, optics manufacturer, and naturalist, was born 26 March 1656 in Gouda, Netherlands, and died 10 December 1725…
PeopleHartsoeker, Nicolas, 1656-1725SpermatozoaBiographySperm