A 72 year old man with the diagnosis of myocardial infarct suffers from central chest pain on the 6th day of admission. ECG changes are difficult to be interpreted for differentiation between the old infarct and a suspected new event. Which of the following cardiac enzymes may be useful for the diagnosis of myocardial reinfarction?
A. LD1
B. Cardiac troponin-I
C. AST
D. Myoglobin
E. CK MB
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