title: On the role of serotonin and acetylcholine in sea urchin morphogenesis.
mesh_terms: D000109:Acetylcholine / Q000494:pharmacology*; D000818:Animals; D004447:Echinodermata / Q000187:drug effects / Q000254:growth & development*; D006634:Histamine H1 Antagonists / Q000494:pharmacology; D009024:Morphogenesis / Q000187:drug effects; D012701:Serotonin / Q000494:pharmacology*; D013565:Sympatholytics / Q000494:pharmacology; D013566:Sympathomimetics / Q000494:pharmacology
chemical_list: D006634:Histamine H1 Antagonists; D013565:Sympatholytics; D013566:Sympathomimetics; D012701:Serotonin; D000109:Acetylcholine