31.   Other products contain forms of the human growth hormone, a compound secreted by the pituitary gland, which plays a role in cell growth.

32.   Patients with heart disease may have such severe damage to their hearts that the organs may no longer have the scaffolding or the chemical signals for new cell growth.

33.   Rapid cell growth, in turn, increases the chances of genetic mutations that may allow a cancer to develop and grow unchecked.

34.   Radioactive particles that reach the body can change the internal structure of cells, damaging DNA and launching uncontrolled cell growth that results in tumors, Akhter said.

35.   Rapid cell growth can increase the chances of genetic mutations that may allow a cancer to develop and grow uncontrolled.

36.   Researchers are also testing stents coated with taxol, an anti-cancer drug, and other drugs to prevent excessive cell growth or scarring.

37.   Scientists have found that many breast cancer cells have elevated levels of an enzyme associated with cell growth.

38.   Similar uncontrolled cell growth has complicated the ability of some heart patients to accept transplants.

39.   Similarly, several drug companies are developing drugs to block another molecule that spurs rapid cell growth called the epidermal growth factor receptor, or EGFR.

40.   Since women are reaching menstruation at an earlier age, they are experiencing more menstrual cycles, more cell growth, and more natural mutation.