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Answer for the clue "Appraisal of the biological activity of a substance by testing its effect on an organism and comparing the result with some agreed standard ", 8 letters:
bioassay

Alternative clues for the word bioassay

Word definitions for bioassay in dictionaries

Wikipedia Word definitions in Wikipedia
Bioassay (commonly used shorthand for biological assay or assessment ), or biological standardization is a type of scientific experiment . A bioassay involves the use of live animal or plant ( in vivo ) or tissue or cell ( in vitro ) to determine the biological ...

Wiktionary Word definitions in Wiktionary
n. the analysis of the biological activity of a substance, with reference to a standard preparation, using a culture of living cells, or a living creature

WordNet Word definitions in WordNet
n. appraisal of the biological activity of a substance by testing its effect on an organism and comparing the result with some agreed standard v. subject to a bio-assay

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
bioassay \bioassay\ v. 1 to subject to a bio-assay. Syn: bio-assay.

Usage examples of bioassay.

Do bioassays of body fluids, which meant urinating into a special bag.

Bionetics Laboratories, a subsidiary of Litton Industries, under contract to the National Cancer Institute, on the effects of 123 chemical compounds in bioassays on 20,000 mice covering periods of up to eighty-four weeks.