cells in the body‚ and cells divide rapidly. Cancer starts as a tumor located in a specific part of the body. A tumor is an abnormal growth of body tissue. There are two types of tumors; benign and malignant. A benign tumor is a tumor that is not cancerous‚ so it has not yet spread to other parts of the body‚ but is localized in one area. They grow slowly and until they become a malignant tumor‚ they are not very harmful. A malignant tumor is one that is cancerous‚ where the cancer cells start traveling
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human cancers and is thought to encourage the growth of tumors. Professor Yusuke Nakamura wanted to target this protein with the new drug that lowered levels of toxicity while still shrinking tumors- this drug ended up being named OTS964. In order to test the drug‚ six mice with LU-99 lung tumors were injected with the drug and studied over a period of two weeks. All the mice recovered from the tumors. In five of the six tested mice the tumors completely shrunk all under 30 days. Even after the drug
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In a tumor not all cells are cancerous‚ which would be great if they could just target the cancer cells and terminate them. However‚ it is not that easy because somehow tumors are able to get stronger and invade many parts of the body. In the article “The Stem Cell Theory of Cancer” the author states that “cancer is primarily driven by a smaller
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the telomeres in cells shorten until there is none‚ and programmed apoptosis—cell death—occurs. Cancer cells elongate their telomeres‚ and so can also replicate almost indefinitely. When these cells start to build up‚ they form a mass called a tumor. Tumors can either be benign or
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The retina is the light sensitive part of the eye. The retina covers approximately 65% of the interior of the eye. In immature retinal cells‚ the cancer will develop in children from the time the eyes develop in the womb to 5 years of age. The tumor starts in the retina‚ the light sensitive layer of the eye‚ which allows the eye to actually see. “ It can occur in either one eye (unilateral) or two eyes (bilateral)”(Hulett‚ WashBurn‚ and Orenic). If the cancer is caught early‚ it is curable
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the cancer‚including the size of the tumor‚ the level of spreading{metastases}and the probable involvement of lymph nodes. The stage of mesothelioma at the time of diagnosis determines
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What is cancer? Breast cancer is a malignant tumor that starts in the cells of the breast. A malignant tumor is a group of cancer cells that can grow into (invade) surrounding tissues or spread (metastasize) to distant areas of the body. The disease occurs almost entirely in women‚ but men can get it‚ too. Types of breast cancer Ductal carcinoma in situ Ductal carcinoma in situ (DCIS; also known as intraductal carcinoma) is considered non-invasive or pre-invasive breast cancer. DCIS means
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aggressive and can occur at any age. In addition‚ it does not manifest itself in the first stages‚ and in most cases are diagnosed only in the later ones. All the malignant ovarian tumors are subdivided into epithelial‚ germ or stromal cell types (cancer). These cancers have the highest incidence among all other tumors. (Jordan‚ S.‚ Green‚ A.‚ & Webb‚ P. 2006 p.109-116). Signs and symptoms of ovarian cancer “Ovarian cancer has often been called the “silent killer” because symptoms are not
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The etiology of brain cancer‚ like other malignancies‚ involves a complex interplay between epigenetic and genetic changes occurring during the natural history of tumor growth and development. Genetic changes accumulate in the form of mutations‚ activation of proto-oncogenes‚ or the loss of tumor suppressor genes that could promote tumor progression‚ invasion‚ and metastasis; this process provides a rational basis for targeting one or more critical genetic defects in cancer cells by using gene-mediated
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and breast cancer stem cells Within a tumor exists a subpopulation of cells that present less abnormal characteristics; however‚ there exists another type that hold the potential to recreate and expand tumor mass. The latter share similar characteristics to normal stem cells‚ which are the unlimited ability to self-renew and the ability to maintain undifferentiated. Over the course of time‚ these cells will differentiate into tumor stem cells (TSC) or tumor-initiating cells with stem-like properties
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