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Important To Understand University Of Texas
1,893 wordsAn Introduction To Telomere and Telomerase The telomere-telomerase hypothesis of aging and cancer is based on the findings that most human tumors have telomerase activity while normal human somatic cells do not. An emerging hypothesis is that the up regulation or re expression of telomerase is a critical event responsible for continuous tumor cell growth. In contrast to normal cells, tumor cells show no loss of average telomere length with cell division. Through this suggestion immortal ization ...
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Breast Cancer Lymph Nodes
1,241 words... read cancer, in order for an early treatment. STAGES OF BREAST CANCER There are mainly four stages of breast cancer. The Stage 0 is noninvasive breast cancer, that is, carcinoma in situ with no affected lymph nodes or metastasis. This is the most favorable stage of breast cancer. The next, Stage 1 breast cancer that is less than three quarters of an inch in diameter and has not spread from the breast. The Stage 2 is the breast cancer that is fairly small in size but has spread to lymph nodes...
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Abnormal Cell Growth Leading To Cancer
1,619 wordsCancer is the second leading cause of death in the United States. Half of all men and one-third of all women in the U. S. will develop cancer during their lifetimes. Although it is common knowledge that cancer is generally inherited, this paper will further explore the causes and what happens on a cellular level when cancer develops in the human body. Basics of signal transduction Cell communication, or signal transduction, is simply the means by which cells in the body respond to signals coming...
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Epstein Barr Virus Lymph Nodes
1,444 wordsHodgkins Disease Cancers arising from the lymph nodes or other sites of lymphoid tissue are broadly termed lymphomas. This group of diseases is divided into Hodgkins disease and non-Hodgkins lymphoma. In both conditions, there is a replacement of normal lymphatic tissue by collections of abnormal lymphoma cells. The lymphatic system are a complex network of specialised cells and organs that defend the body against infection. Lymphatic organs include the bone marrow, spleen, thymus gland, lymph n...
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Funk 038 Wagnalls Cancer Cells
1,572 wordsMitosis in cancerous cells Mitosis, the process in which a cell undergoes nuclear division, is one of the four subdivisions of the cell cycle responsible for cell growth and reproduction. The first step in mitosis is prophase. In prophase the chromatin, diffuse in interphase, condenses into chromosomes. Each chromosome duplicates and has become two sister chromatids. At the end of prophase, the nuclear envelope breaks down into vesicles. The following step in mitosis is metaphase. During metapha...
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