title: A convenient source of creatine kinase isoenzyme BB.
mesh_terms: D003402:Creatine Kinase / Q000302:isolation & purification*; D005260:Female; D006801:Humans; D007527:Isoenzymes; D010920:Placenta / Q000201:enzymology*; D011247:Pregnancy
chemical_list: D007527:Isoenzymes; D003402:Creatine Kinase