The fractional disappearance rate of the separate isoenzymes of creatine phosphokinase in the dog

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Abstract
Separation of creatine phosphokinase (CPK) isoenzymes from canine tissue was accomplished successfully with column chromatography. Intravenous injection of each isoenzyme into six dogs resulted in a mono-exponential loss with differing fractional disappearance rates which averaged 0.65%, 0.86%, and 1.68%/min for the MM, MB, and BB isoenzymes, respectively. The distribution volume also varied: MM averaged 6.7%/body weight, MB 7.8%, and BB 10.4%.