Marine invertebrate preparations useful in the bioassay of acetylcholine and 5-hydroxytryptamine.
D000109:Acetylcholine / Q000032:analysis*; D000818:Animals; D001681:Biological Assay; D007448:Invertebrates; D012701:Serotonin / Q000032:analysis*
D012701:Serotonin; D000109:Acetylcholine
ACETYLCHOLINE/determination; INVERTEBRATES; SEROTONIN/determination