Individual cells face three choices: to divide (motosis), to specialize (differentiate) orto commit suicide (apoptosis).the balance between tee ensures tight regulation of cell numbers within organisms, If mitosis pro- ceeded without cell death, an 80-year-old person would have 2 tons of bone marrow and lymph nodes, and a gut 16 km long. Nevertheless, it took a long time for apop- Tosis to emerge into the limelight. Apoptosis is Over 20 times faster than mitosis, and sight- Ings of dying cells are rare.
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