A germ layer is a collection of cells, formed during animal embryogenesis. Germ layers are only really pronounced in the vertebrates. However, all animals more complex than sponges (eumetazoans and ...
Proceedings of the Royal Society of London. Series B, Biological Sciences, Vol. 134, No. 876 (Jul. 2, 1947), pp. 377-398 (30 pages) A critical study and demonstration of the distribution of yolk ...
In their publication in Science, Professor Guojun Sheng (Kumamoto University, Japan), Professor Alfonso Martinez Arias (Universidad Pompeu Fabra, Spain) and Professor Ann Sutherland (University of ...
The discovery of a new kind of stem cell challenges conventional thinking about embryonic development. According to the traditional view, the human embryo develops from a three-layered collection of ...
How does the “body” take shape? The body of animals is highly complex, containing distinct regions that carry out specific functions. As the body forms during embryogenesis, three germ layers are ...
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