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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: Hilary Gilson | Published: Sep 30, 2008

The embryological treatise De formatione ovi et pulli (On the Formation of the Egg and of the Chick) was written by anatomist and embryologist…

By: Kate MacCord | Published: Dec 02, 2013

Ectoderm is one of three germ layers--groups of cells that coalesce early during the embryonic life of all animals except maybe sponges, and from…

By: Lance Villarreal | Published: Aug 31, 2018

Matthew Kaufman was a professor of anatomy at the University of Edinburgh, in Edinburgh, UK, who specialized in mouse anatomy, development, and…

By: Kate MacCord | Published: Sep 17, 2013

A germ layer is a group of cells in an embryo that interact with each other as the embryo develops and contribute to the formation of all organs and…

By: Valerie Racine | Published: Aug 05, 2013

Etienne Geoffroy Saint-Hilaire, commonly known as Geoffroy, studied animals, their anatomy and their embryos, and teratogens at the National Museum…

By: Kate MacCord | Published: Nov 17, 2013

Endoderm is one of the germ layers-- aggregates of cells that organize early during embryonic life and from which all organs and tissues develop.…

By: Brad Jacobson | Published: Nov 19, 2010

Clifford Grobstein was a traditional, influential, and highly innovative biologist of the mid-twentieth century, gifted with many character facets…