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By: Kristin Kelley | Published: Sep 02, 2010

The extraembryonic membranes that surround and originate from the embryos of vertebrates such as birds, reptiles, and mammals are crucial to their…

By: Katherine Brind'Amour | Published: Jun 04, 2008

Amniocentesis is a test used for prenatal diagnosis of inherited diseases, Rh incompatibility, neural tube defects, and lung maturity. Normally…