Titlebook: Handbook of the Sociology of Education; Maureen T. Hallinan (Director) Textbook 2000 Springer-Verlag US 2000 Institution.education.educati

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o relatively late developmental events such as myelination. Cell-cell communication appears to be mediated by direct cell-cell contact as well as by specific diffusible substances. In addition to cellular signals, hormones may also greatly influence the course of brain development. To elucidate thes

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Elizabeth G. Cohensional cell structure of each sphere provides a maximum of cell-cell interactions, and enables the cells to rearrange and to develop in a histotypic fashion. Histotypic cellular organization and maturation occurs also in aggreate cultures prepared and grown in a chemically defined medium (3,5). Thes