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Pharmacology
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A broad term that includes the study of drugs and their actions in the body
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Pharmacy
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The art of preparing, compounding, and dispensing drugs for medicinal use
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Toxicology
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The science that deals with poisons-their detection and the symptoms, diagnosis, and treatment of conditions caused by them
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Biotechnology
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The field of pharmacology that involves using living cells, usually altered cultures of Escherichia coli, to manufacture drugs
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Drug
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Any substance used as medicine; used to diagnose, cure, mitigate, treat, or prevent disease
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Chemical substances
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Agents that may be made synthetically; sulfonamides, aspirin, sodium bicarbonate
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Plant parts or products
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Crude drugs that may be obtained from any part of various plants and used medicinally; leaves, bark, fruit, roots, rhizomes, resin, and other parts may be used (ergot, digitalis, opium)
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Animal products
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Primarily glandular products that are currently obtained from animal sources; thyroid hormone, insulin
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Certain food substances
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Substances that under some conditions serve both as foods and as medicinal substances; vitamins and minerals in various foods
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Additive effect
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The combined effect of two drugs that is equal to the sum of the effects of each drug taken alone
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Adverse or untoward effect
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An action, usually negative, that is different from the planned effect
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Allergic reaction
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An untoward reaction that develops after the individual has taken a drug
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Analog
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A chemical compound that resembles another in structure but has different effects
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Antagonism
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The combined effect of two drugs that is less than the effect of either drug taken alone
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Biosynthesis
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Formation of a chemical compound by enzymes, either within an organism (in vivo) or in vitro by fragments of cells
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