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Another name for tumor is |
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which tumor is well differentiated? |
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which tumor if not encapsulated? |
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lipoma, glioma, leiomyoma, chondroma |
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mailgnant epithelial tumors are reffered to as |
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an example of a malignant epithelial tumor is |
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malignant connective tissue tumors are referred to as |
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an example of a malignant connective tissue tumor is |
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cancers of lymphatic tissues are |
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cancers of blood-forming cells are |
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Preinvasive epithelial malignant tumors of glandular or epithelial origin that have not broken through the basement membrane or invaded the surrounding stroma are |
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what are 2 types of cell differentiation? |
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a cancer cell's independence from normal cellular controls is a |
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when a cell varies in size and shape then it is |
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some stem cells are pluripotent. what is pluripotent? |
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the ability to differentiate into multiple different cell types |
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biological markers that are substances produced by cancer cells or that are found on plams cell membranes, in the blood, CSF or urine are |
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name a few tumor cell markers |
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hormones, enzymes, genes, antigens, antibodies |
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cancer is predominantly a disease of |
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growth of new vessels are |
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advanced cancer cells can secrete |
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angiogenesis factors (VEGF) |
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Vascular endothelial growth factor |
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angiogenesis factors are rquired in small cancers to premit? |
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what are protective caps on each chromosome and are held in place by telomerase? |
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mutant genes that in their nonmutant state direct protein synthesis and cellular growth |
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also referred to as anti-oncogenes |
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encode proteins that in their normal state negatively regulae proliferation |
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changes in one or a few nucleoide base pairs are called |
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when a piece on one chromosome is transferred to another is |
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duplication of a small piece of chromosome over and over thta results in an increased expreesion of an oncogene is |
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what does mutation of tumor-suppressor genes allows? |
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unregulated cellular growth |
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when both chromosome copies of a gene are inactivated this is due to |
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when whole regions of chromosomes are shut off while the same regions in other cells remain active this is? |
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what are caretaker genes? |
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encode for proteins that are involved in repairing damaged DNA |
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- increased in malignant cells,
- results in chromosomes loss, loss of heterozygosity, and chromosome amplifaction
are examples of |
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if the mutation occurs in somatic cells, it is NOT passed to |
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direct invasion of contagious organs is also known as? |
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how do metastases occur to distant organs? |
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through lymphatics and blood |
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what are the phases of tumor spread? |
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- transformation
- growth
- local invasion
- distant metastasis
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the spread of cancer from a primary site of origin to a distant site is? |
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what are the steps of metastasis? |
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- direct or continuous extension
- penetration into lymphatics, blood vessels, or body cavities
- transport into lymph or blood
- transport to secondary sites
- entry and growth in secondary sites
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where does metastasis occurs usually? |
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preferential growth of cancerous cells in certain organs is |
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