منابع مشابه
Retinoic Acid Determines the Fate of Spermatogonia
In this review, we aim to examine the effect of extrinsic and intrinsic factors on spermatogenesis process taking into account a complex signaling pathway. Primarily, it is suggested that retinoic acid (RA) has a vital function in spermatogenesis process and it is considered to be essential for completion of spermatogonia into mature spermatozoa. In the present review, the key effects of retino...
متن کاملAN INDEX REPRESENTING STRUCTURE-CATABOLIC FATE RELATIONSHIPS OF AMINO ACIDS
Based on the Randic suggestion of the resolution of a structure into shape, size, and function an index representing structure-catabolic fate relationships of amino acids is constructed. The index obtained by multiplying three factors; (nb2 + nr), nc and M; representing shape, size and function respectively, where nb2 = number of double bonds, nr = number of rings, nc = number of carbon atoms, ...
متن کاملFate Map
Early development occurs in a highly organized and orchestrated manner and has long attracted the interest of developmental biologists and embryologists. Cell lineage, or the study of the developmental differentiation [4] of a blastomere [5], involves tracing a particular cell ( blastomere [5]) forward from its position in one of the three germ layers [6]. Labeling individual cells within their...
متن کاملFate Map
Early development occurs in a highly organized and orchestrated manner and has long attracted the interest of developmental biologists and embryologists. Cell lineage, or the study of the developmental differentiation [4] of a blastomere [5], involves tracing a particular cell ( blastomere [5]) forward from its position in one of the three germ layers [6]. Labeling individual cells within their...
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ژورنال
عنوان ژورنال: Nature
سال: 2002
ISSN: 0028-0836,1476-4687
DOI: 10.1038/417021a