title: Evidence supporting potassium ion-induced lengthening of phosphorus-31 nuclear magnetic resonance T1 relaxation times in malignant tumors.
mesh_terms: D000818:Animals; D002645:Chickens; D006801:Humans; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D009132:Muscles / Q000032:analysis; D009369:Neoplasms / Q000032:analysis*; D010758:Phosphorus; D011188:Potassium / Q000032:analysis*
chemical_list: D010758:Phosphorus; D011188:Potassium