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tumor |
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tumor: see neoplasm neoplasm or tumor, tissue composed of cells that grow in an abnormal way. Normal tissue is growth-limited, i.e., cell reproduction is equal to cell death. ..... Click the link for more information. . tumour (US), tumor Pathol a. any abnormal swelling b. a mass of tissue formed by a new growth of cells, normally independent of the surrounding structures tumor [′tü·mər] (medicine) Any abnormal mass of cells resulting from excessive cellular multiplication. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Working with some mice that had formed tumors, Conney's team found a similar effect: Tumor cells in exercisers were more likely to die spontaneously than were tumor cells in sedentary mice. Experiments spanning several decades have shown, however, that as many as one million murine or human tumor cells are required to transplant a new tumor from an existing one. Special staining demonstrated that only a very few tumor cells were positive for alpha fetoprotein, despite the markedly elevated level of alpha fetoprotein in her serum. |
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