CANCER - GENERAL |
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Cancer is a class of diseases or disorders characterized by uncontrolled division of cells and the ability of these cells to invade other tissues, either by direct growth into adjacent tissue through invasion or by implantation into distant sites by metastasis. This unregulated growth is caused by damage to DNA, resulting in mutations to genes that encode for proteins controlling cell division. Many mutation events may be required to transform a normal cell into a malignant cell. These mutations can be caused by chemicals or physical agents called carcinogens, by close exposure to radioactive materials, or by certain viruses that can insert their DNA into the human genome. Mutations occur spontaneously, or are passed down generations as a result of germ line mutations.
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DERMATOLOGY |
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Dermatology (from Greek derma, "skin") is a branch of medicine dealing with the skin and its appendages (hair, nails, sweat glands etc). A medical doctor who specializes in dermatology is a dermatologist. The surgical practice of dermatology is dermasurgery.
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DRUG TESTING |
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A Drug test is a process using some kind of biological matter taken from an individual to determine previous drug use. Drug testing is a subject of much controversy. Many have argued that it is an invasion of privacy. The accuracy and effectiveness of some tests are also in question, however, if proper steps are followed, including a GC/MS quantitative laboratory confirmation test, drug testing technology is highly reliable.
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