Ovarian cancer treatment
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Carcinogenesis (lit.: creation of cancer) is the process of derangement of the rate of cell division.
In cellular model systems, cells are exposed to carcinogenic influences (chemicals, radiation). In these systems, the first signs of a cell developing into a tumor cell are:
- Immortality. The usual number of cell divisions for a mammalian cell is 50-60 (cell senescence), then it ceases to divide. Tumor cells keep dividing forever.
- Altered morphology.
- Building of cellular clusters (Foci).
- Loss of contact inhibition.
- Low or no need for growth factors.
Items 2-4 (above) can sometimes be traced to mutations in genes that result in a disruption of cell adhesion. Some cell adhesion proteins are oncogenes.
In medicine, cancer is a general term for any of a number of different diseases where some of the body's own cells divide in an uncontrolled manner. The resulting new cells can form a malignant tumor (a neoplasm) or propagate throughout the body.
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- Oncology Interactive Education Series
Commercial audio-visual educational resources for patients. - Cancer Mondial
The International Agency for Research on Cancer provides access to reports and databases on occurrence and characteristics. - Guide To Internet Resources For Cancer
Non-profit directory of information sorted by disease type, country and treatment. - Don't Say That Word
Provides an online forum on cancer, information, personal stories, poetry and remembrance pages. Graphics-intensive. - CancerSymptoms
Discusses common symptoms related to cancer treatment. Provides email access to a nurse for questions.