title: Decrease in the activity of tryptophan hydroxylase from slices of rat brain stem incubated in a low calcium or a calcium-free manganese-substituted medium.
mesh_terms: D000818:Animals; D001933:Brain Stem / Q000201:enzymology*; D002118:Calcium / Q000502:physiology*; D066298:In Vitro Techniques; D007700:Kinetics; D008345:Manganese / Q000494:pharmacology*; D051381:Rats; D013779:Tetrodotoxin / Q000494:pharmacology; D014365:Tryptophan Hydroxylase / Q000378:metabolism*
chemical_list: D008345:Manganese; D013779:Tetrodotoxin; D014365:Tryptophan Hydroxylase; D002118:Calcium