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Descriptor English:   Biological Assay 
Descriptor Spanish:   Bioensayos 
Descriptor Portuguese:   Bioensaios 
Synonyms English:   Bioassay  
Tree Number:   E05.091
SP4.016.172.918
SP4.021.242.403
Definition English:   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. 
Indexing Annotation English:   assays using living-matter intermediate; check text: not all "bioassays" are MeSH term BIOLOGICAL ASSAY; Manual 22.27; DF: BIOL ASSAY
Allowable Qualifiers English:  
adverse effects classification
contraindications economics
ethics history
instrumentation mortality
methods nursing
psychology statistics & numerical data
standards trends
utilization veterinary
Record Number:   1706 
Unique Identifier:   D001681 

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