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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

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

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

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 ...

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.