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Human Early Embryo Development

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An Embryo is a multicellular diploid eukaryote in its earliest stage of development, from the time of first cell division until birth, hatching, or germination. In Humans, it is called an Embryo from the moment of Fertilization until the end of the 8th week of gestational age, whereafter it is instead called a Fetus. In organisms that reproduce sexually, once a Sperm fertilizes an Egg cell, the result is a cell called the Zygote. In animals, the development of the Zygote into an embryo proceeds through specific recognizable stages of Blastula, Gastrula, and Organogenesis. Little is known about the specific genes that regulate these early events or how interactions among cells or how cellular interactions with other factors in the [...]


1.Adult stem cells: the real root into the embryo?
Zummo G, Bucchieri F, Cappello F, Bellafiore M, La Rocca G, David S, Di Felice V, Anzalone R, Peri G, Palma A, Farina F.
Eur J Histochem. 2007;51 Suppl 1:101-3.
2.Embryonic stem cell differentiation: emergence of a new era in biology and medicine.
Keller G.
Genes Dev. 2005 May 15;19(10):1129-55.
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