“…Typical CK isoenzymes include CK-BB (cranial nerve type), CK-MB (hybrid, cardiac muscle type), and CK-MM (skeletal muscle type) [ 4 , 15 , 20 ]. In addition, two macroenzymes, macro-CK type 1 (mCK1) and macro-CK type 2 (mCK2), have been reported in serum and plasma specimens at higher molecular masses than other enzymes [ 4 , 15 , 20 ]. Analysis of the CK isoenzyme fractions in animals and humans can be used for an auxiliary diagnosis of diseases of the central nervous system, cardiac muscle, and skeletal muscle [ 1 , 15 , 20 ].…”