title: Na+/Li+ selectivity in transport system A: effects of substrate structure.
mesh_terms: D000596:Amino Acids / Q000378:metabolism*; D000818:Animals; D001692:Biological Transport; D002286:Carcinoma, Ehrlich Tumor; D002460:Cell Line; D007700:Kinetics; D008094:Lithium / Q000378:metabolism*; D008745:Methylation; D008968:Molecular Conformation; D012964:Sodium / Q000378:metabolism*
chemical_list: D000596:Amino Acids; D008094:Lithium; D012964:Sodium