title: Letter: Creatine phosphokinase as indicator of adenosine triphosphate activity.
mesh_terms: D000255:Adenosine Triphosphate / Q000096:biosynthesis*; D003402:Creatine Kinase / Q000097:blood* / Q000378:metabolism*; D003711:Demyelinating Diseases / Q000201:enzymology; D006801:Humans; D007223:Infant; D009046:Motor Neurons; D009133:Muscular Atrophy / Q000201:enzymology / Q000235:genetics*; D010243:Paralysis / Q000201:enzymology; D013118:Spinal Cord Diseases / Q000201:enzymology*
chemical_list: D000255:Adenosine Triphosphate; D003402:Creatine Kinase