305
In biopsies CK - MB fraction of total myocardial CPK was 37 % , the total - CPK activity of human skeletal muscles still shows a 5 % fraction of CK - MB .
 CK - MB, CPK, total - CPK, CK - MB
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: GENE 
Text: {0} 
Answer:
 CK - MB, CPK, total - CPK, CK - MB