Mindblown: a blog about philosophy.
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Reagent
A substance employed to produce a chemical reaction so as to detect, measure, produce, etc., other substances. A chemical substance which reacts with another substance, especially one which is used to detect the presence of the second substance. A substance used to produce a chemical reaction to detect, measure, or produce other substances. For example,…
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Reactivation
The restoration of activity to something that has been inactivated. The process of making something active again. Reactivating a dormant serum by adding complement.
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Randomized clinical trial
A study in which the participants are assigned by chance to separate groups that compare different treatments; neither the researchers nor the participants can choose which group. Using chance to assign people to groups means that the groups will be similar and that the treatments they receive can be compared objectively. At the time of…
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Randomized
Describes an experiment or clinical trial in which animal or human subjects are assigned by chance to separate groups that compare different treatments.
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Radiotherapy
Treatment of disease, especially certain forms of cancer, by radiation given off by special machines or by radioactive isotopes. The radiation interferes with the division (mitosis) of cells and the synthesis of deoxyribonucleic acid (DNA) in the cells. Many cancer cells are destroyed by radiation; the major disadvantage is possible damage to cells and tissues…
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Radiolabeled
Any compound that has been joined with a radioactive substance.
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Radioactive
Giving off radiation. The emission of particles during the disintegration of the nuclei of radioactive elements. The emissions include alpha particles, beta particles, and gamma rays. With a nucleus which disintegrates and gives off energy in the form of radiation which can pass through other substances. Capable of spontaneous emission of alpha, beta, or gamma…
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Radiation therapy
The use of high-energy radiation from x-rays, gamma rays, neutrons, and other sources to kill cancer cells and shrink tumors. Radiation may come from a machine outside the body (external-beam radiation therapy), or it may come from radioactive material placed in the body in the area near cancer cells (internal radiation therapy, implant radiation, or…
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Quality of life
A generic concept reflecting concern with the modification and enhancement of life attributes, e.g., physical, political, moral and social environment. The perception by individuals or groups of need satisfaction and the ability to achieve their goals in order to be happy and fulfilled. A condition often given as one attribute or dimension of health. It…
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Purines
A series of heterocyclic compounds that are variously substituted in nature and are known also as purine bases. They include adenine and guanine, constituents of nucleic acids, as well as many alkaloids such as caffeine and theophylline. Uric acid is the metabolic end product of purine metabolism. Nitrogenous compounds (bases) that occur in nucleic acids…
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