\bˌa͡ɪə͡ʊɐsˈe͡ɪ], \bˌaɪəʊɐsˈeɪ], \b_ˌaɪ_əʊ_ɐ_s_ˈeɪ]\
Definitions of BIOASSAY
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A method of measuring the effects of a biologically active substance using an intermediate in vivo or in vitro tissue or cell model under controlled conditions. It includes virulence studies in animal fetuses in utero, mouse convulsion bioassay of insulin, quantitation of tumor-initiator systems in mouse skin, calculation of potentiating effects of a hormonal factor in an isolated strip of contracting stomach muscle, etc.
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- Predetermined sets of questions used collect data - clinical data, social status, occupational group, etc. The term is often applied to a self-completed survey instrument.