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By: Karen Wellner | Published: Jul 17, 2009

Historically the exact age of human embryo specimens has long perplexed embryologists. With the menstrual history of the mother often unknown or not…

By: Stephen Ruffenach | Published: Jul 07, 2009

Caspar Friedrich Wolff is most famous for his 1759 doctoral dissertation, Theoria Generationis, in which he described embryonic development in both…

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: Editorial Team, EP | Published: Jul 07, 2009

Brian Hall is the son of Doris Garrad and Harry Hall, and was born in Port Kembla, NSW Australia, on 28 October 1941. He attended the University of…

By: Mary E. Sunderland | Published: Jun 10, 2009

Regeneration is a fascinating phenomenon. The fact that many organisms have the capacity to regenerate lost parts and even remake complete copies of…

By: Tian Zhu | Published: Jun 10, 2009

Intracytoplasmic Sperm Injection (ICSI) is an assisted reproductive technique (ART) initially developed by Dr. Gianpiero D. Palermo in 1993 to treat…

By: Karen Wellner | Published: Jun 10, 2009

The scientific field of embryology experienced great growth in scope and direction in Germany from approximately 1850 to 1920. During this time,…

By: Mary E. Sunderland | Published: Jun 10, 2009

Charles Manning Child designed an experimental test, the susceptibility assay, to measure the effects of different toxins on developmental processes…

By: Mary E. Sunderland | Published: Jun 10, 2009

Charles Manning Child designed an experimental test, the susceptibility assay, to measure the effects of different toxins on developmental processes…

By: Steve Elliott | Published: Jun 10, 2009

Jacques Loeb broadened and corrected his earlier claims concerning artificial parthenogenesis in sea urchins in a series of experiments in 1900. He…