A human embryo of thirteen somites
نویسندگان
چکیده
منابع مشابه
Myogenesis in chick embryo somites in vitro.
Evidence from a number of studies (e.g. Holtzer, 1964; Coon & Cahn, 1966; Konigsberg, 1963) has suggested that the differentiation of some types of cells in vitro may be influenced by environmental factors. Culture conditions can permit or prevent the phenotypic expression of characteristics already determined in the cells. The length of time involved in the stabilization of differentiation app...
متن کاملChondrogenesis in chick embryo somites in vitro.
During the embryonic development of vertebral cartilages, cells from the somite mesoderm differentiate into chondrocytes around the spinal cord and notochord. Grafting experiments in amphibian and chick embryos have indicated that the spinal cord and notochord have some influence on this differentiation of somite cells to cartilage (Holtzer & Detwiler, 1953; Watterson, Fowler & Fowler, 1954). F...
متن کاملDifferentiation of chick embryo somites in chorioallantoic culture.
An analysis was made of the differentiative capabilities of somites isolated from all regions of stage-8 (4-somite) to stage-18 (36-somite) chick embryos, with particular reference to the incidence of spontaneous chondrogenesis. A chorioallantoic grafting technique with Millipore filter as a graft vehicle was employed. The youngest somites which spontaneously differentiated cartilage were the a...
متن کاملThe Development of Somites in the Chick Embryo.
1. The 'somite centres*. Spratt (1955) put forward the idea that two 'somite centres' exist in the chick blastoderm and that these actively induce the formation of somites. His evidence is based mainly on a series of transection experiments. 2. HenserCs node. This theory is based on the results of experiments in which the node is damaged or extirpated (e.g., Peebles, 1898; Wetzel, 1929; Fraser,...
متن کاملA histochemical study of sulphated glycosaminoglycans associated with the somites of the chick embryo.
A histochemical study of sulphated glycosaminoglycans associated with the somites of the chick embryo SUMMARY A histochemical analysis has been made of sulphated glycosaminoglycans (mucopoly-saccharides) associated with chick embryo somites before and after the onset of overt cartilage differentiation. The sulphated glycosaminoglycans were distinguished and resolved into different types by the ...
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ژورنال
عنوان ژورنال: American Journal of Anatomy
سال: 1913
ISSN: 0002-9106,1553-0795
DOI: 10.1002/aja.1000150304