Fraction of CPK is an enzyme that is elevated in a myocardial infarct is____________________?
Correct answer: B. MB fraction
- A. MM fraction
- B. MB fraction
- C. BB fraction
- D. Both MM and BB fraction
Explanation
CK-MB is the creatine kinase isoenzyme relatively concentrated in cardiac muscle, so it rises after myocardial infarction. CK-MM is mainly associated with skeletal muscle, whereas CK-BB is prominent in brain tissue.
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