title: Multivalent cations and anionic substitution effects on frog skin.
mesh_terms: D000818:Animals; D001001:Anura; D001693:Biological Transport, Active; D002104:Cadmium / Q000494:pharmacology*; D002118:Calcium / Q000494:pharmacology*; D002712:Chlorides / Q000494:pharmacology; D003300:Copper / Q000494:pharmacology; D007811:Lanthanum / Q000494:pharmacology; D012867:Skin / Q000187:drug effects*; D013431:Sulfates / Q000494:pharmacology; D015032:Zinc / Q000494:pharmacology
chemical_list: D002712:Chlorides; D013431:Sulfates; D002104:Cadmium; D007811:Lanthanum; D003300:Copper; D015032:Zinc; D002118:Calcium