Gene Expression in Tooth - Information on expression of different genes in the developing tooth. The purpose of this atlas is to provide students and researchers of birth defects in academia, industry and government with a set of images of both rare and common observations in fetuses and neonates from common laboratory mammals. Medical Embryology - Human embryology, with resources for medical student, like quizzes and notes, as well as pictures. The site is in Spanish. The Visible Embryo - Visual and textual presentation of early human development from egg to birth.
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