title: Effect of certain cations on activity of leucine naphthylamidases of Paramecium caudatum.
mesh_terms: D003035:Cobalt / Q000494:pharmacology; D003300:Copper / Q000494:pharmacology; D004492:Edetic Acid / Q000494:pharmacology; D006863:Hydrogen-Ion Concentration; D007931:Leucyl Aminopeptidase / Q000378:metabolism*; D008274:Magnesium / Q000494:pharmacology; D008345:Manganese / Q000494:pharmacology; D008670:Metals / Q000494:pharmacology*; D010247:Paramecium / Q000187:drug effects / Q000201:enzymology*
chemical_list: D008670:Metals; D003035:Cobalt; D008345:Manganese; D003300:Copper; D004492:Edetic Acid; D007931:Leucyl Aminopeptidase; D008274:Magnesium