Ask A Scientist Molecular Biology Archive

name         James C.
status       student
age          13

Question -   Why do our cells shut down?
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Some of the cells in the body get worn out and need o be replaced, like red
blood cells. Other parts of the body don't wear out and dot need
replacement...like parts of the liver and brain. If the cells of these
organs were not shut off from making more cells eventually the liver and
brain would get bigger and bigger and your good cells would lose their happy
homes. So our wonderful bodies know when to make and get rid of cells.

pf
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