Question

human cells,either normol or cancer cells in culture usually divide ?how many hours?

Answer 1

Different cancers divide at different rates. One way to qualitatively visualize this is observe hair loss in patients who are undergoing chemotherapy. Commonly, a drug like cisplatin will be administered which will cross-link DNA, inhibiting cell division by activating apoptosis. Tissues which are killed most readily by cisplatin are those which are dividing most rapidly: intestines, head hair, red and white blood cells, tumors.

Despite the loss of hair on the head, many patients do not lose slower growing hair on their arms, eyebrows, eyelashes, etc. Likewise, though cell death in the intestinal lining may be dramatic on cisplatin, the skin may not show lesions as it is a more slowly dividing population of cells.

The rate of cell division correlates with the rate of cell death while taking the chemotheraputic drug cisplatin.

You may make a rough visual survey of the cells in the body which divide so rapidly that they die, and divide so slowly that they largely survive chemotherapy.

The rate of cell division of head hair and other body hair spans the rate of cell division over which cisplatin effectively acts on tumor cells.