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By: Stephen Ruffenach | Published: Jul 07, 2009

Sperm capacitation refers to the physiological changes spermatozoa must undergo in order to have the ability to penetrate and fertilize an egg. This…

By: Cera R. Lawrence | Published: Aug 13, 2008

Ovism was one of two models of preformationism, a theory of generation prevalent in the late seventeenth through the end of the eighteenth century.…

By: Stephen C. Ruffenach | Published: Jul 21, 2009

Ovum Humanum was written and compiled by Dr. Landrum Brewer Shettles while he worked as a doctor in New York. The publication contains an atlas of…

By: Cera R. Lawrence | Published: Sep 22, 2008

Victor Albrecht von Haller was an 18th century scientist who did extensive work in the life sciences, including anatomy and physiology, botany, and…