ANAT 381 Lecture 1: 0- Introduction
18 Dec 2017
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Event. at the levels of the cells and molecules, every single. Developmental biology concerns all aspects of these life events. o . On this basis, there are six general questions asked by developmental o . Differentiation is the generation of cellular diversity in our body. The cell acquires a new feature that did not exist before. It starts with a single cell resulting form the combination of the sperm and egg. o : there are three major cell groups in the embryo, called the three germ layers: ectoderm (outer layer), mesoderm . The endoderm is the inside layer: internal organs which are exposed to the outside environment digestive tube, pharynx, respiratory tube. An exception is immune cells which eventually lose parts of their genomes: when working with the embryonic stem cells , which are derived from the fetus and cultured in vitro, can induce any cell type: muscles, neurons .
