median toxic dosage

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The quantity of a drug or other substance that produces signs or symptoms of toxicity in 50 per cent of human or animal experimental subjects in a specified time. Also called the mean toxic dosage. See also therapeutic index, therapeutic ratio, toxic dosage. Compare median effective dosage, median lethal dosage, minimum effective dosage, minimum lethal dosage, minimum toxic dosage. TD-50 or TD50 abbrev.

Subjects: Psychology.

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