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Stem cells characteristic features

Over the last thirty years or so, our understanding of the complex mechanisms and interactions which regulate blood cell production has increased greatly. It is now recognized from experimental studies that cells are produced and mature within the bone marrow space from the relatively small population of pluripotent stem cells which comprise approximately 0.01-0.05% of the total nucleated marrow cell population and are established during embryogenesis (Metcalf and Moore, 1971). The two characteristic features of stem cells are that they have enormous ability to proliferate to produce more stem cells, a process known as self-renewal, and that they... [Pg.443]

The characteristic feature of auxins is their ability to promote cell elongation in coleoptile and stem tissue. For a detailed discussion of the auxins the reader is referred to Audus (1972). The emphasis here will be on the interaction of auxin with other plant hormones in the regulation of stem and coleoptile cell elongation. Coleoptiles are included here rather than in the section on leaf cells, since the hormonal sensitivity of coleoptiles is more stem-like than leaf-like. [Pg.48]


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See also in sourсe #XX -- [ Pg.445 ]




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Cell features

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