title: Endogenous low molecular weight factors, vitamin A and phorbol esters dramatically affect pattern formation and positional values in marine hydroids.
mesh_terms: D000818:Animals; D003063:Cnidaria / Q000187:drug effects / Q000502:physiology*; D010703:Phorbol Esters / Q000494:pharmacology*; D010848:Picolinic Acids / Q000378:metabolism; D014801:Vitamin A / Q000494:pharmacology*
chemical_list: D010703:Phorbol Esters; D010848:Picolinic Acids; D014801:Vitamin A; C010981:homarine