\bˌa͡ɪəlˈɒd͡ʒɪkə͡l ɐsˈe͡ɪz], \bˌaɪəlˈɒdʒɪkəl ɐsˈeɪz], \b_ˌaɪ_ə_l_ˈɒ_dʒ_ɪ_k_əl ɐ_s_ˈeɪ_z]\
Definitions of BIOLOGICAL ASSAYS
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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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- See cut. series of stitches each separately tied. A s. formed by single stitches inserted separately, needle being usually passed through one lip from without inward, and the other within outward.