Encyclopedia > Embryology

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Embryology is the science of the early development of organisms , between the one-cell stage (generally, but not always, the zygote ) and the beginning of free living. Embryology therefore deals with the various steps necessary for the correct and complete formation of the body of a living organism. Born as a descriptive science, modern embryology is involved in studying the molecular mechanisms that underlie the development of the embryo ; see also developmental biology.

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