Mechanisms responsible for tissue growth

In adult tissue, the number of cells in tissues and organs remains constant, and any new cells produced by cell division need to be compensated by the loss of other cells. In contrast, during postnatal growth, an excess of cell production over cell loss is required to generate the excess of cells that ensure tissue expansion while maintaining tissue function. Very little is known about the mechanisms that ensure the postnatal growth from birth until adulthood.

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