论文信息 - The maturation of a cell

The maturation of a cell

Many of the cells in a human body are disposable. That is, many are meant to be used briefly, and when they become used up, to be discarded. Con? sider skin cells, which are abraded in vast numbers daily, only to be replaced by other skin cells. Or blood cells, which reside in the body for only a few weeks before being replaced. Bone cells are also being used and replaced, either as the bone is remodeled in response to the changing demands it receives through a person's lifetime, or when it is broken and must be repaired. Skin, blood and bone cells represent the mature or differentiated stages of each cell type. In order for the body to replenish these mature cells when nec? essary, it must manufacture an ample supply of precursor cells. Precursors are the immature varieties of the fully func? tional cells that have the capability to divide and make more precursors or differentiate into the mature and func?

G. Stein | J. Lian | J. Stein | A. J. Wijnen

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