The Wnt/beta-catenin signaling pathway and microRNA 335 are instrumental in helping form differentiated progenitor cells from stem cells. These are organized in germ layers and are thus the origin 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 ...
American Journal of Botany, Vol. 27, No. 10 (Dec., 1940), pp. 895-905 (11 pages) Periclinal chimeras were obtained in Datura by treating seeds for 3-8 days with 0.2 per cent to 0.4 per cent solutions ...
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