title: Cation balance in biological systems.
mesh_terms: D000818:Animals; D001419:Bacteria / Q000378:metabolism; D001717:Birds; D001921:Brain / Q000378:metabolism; D002118:Calcium / Q000378:metabolism*; D002417:Cattle; D004285:Dogs; D004912:Erythrocytes / Q000378:metabolism*; D006041:Goats; D006168:Guinea Pigs; D006801:Humans; D007313:Insecta / Q000378:metabolism; D007668:Kidney / Q000378:metabolism; D008099:Liver / Q000378:metabolism; D008274:Magnesium / Q000378:metabolism*; D008861:Microsomes / Q000378:metabolism; D008928:Mitochondria / Q000378:metabolism; D009132:Muscles / Q000378:metabolism; D009206:Myocardium / Q000378:metabolism; D009417:Nerve Tissue / Q000378:metabolism; D010944:Plants / Q000378:metabolism; D011188:Potassium / Q000378:metabolism*; D011817:Rabbits; D051381:Rats; D012756:Sheep; D012867:Skin / Q000378:metabolism; D012964:Sodium / Q000378:metabolism*; D013116:Spinal Cord / Q000378:metabolism; D014882:Water-Electrolyte Balance
chemical_list: D012964:Sodium; D008274:Magnesium; D011188:Potassium; D002118:Calcium