Which of the following correctly explains why the CK₁ isoenzyme is typically not detected?
A) The molecular weight of CK₁ prevents its passage across the blood-brain barrier, thus it does not appear in the blood stream.
B) CK₁ is not very chromophoric, making it difficult to detect its presence.
C) CK₁ is completely destroyed by plasma enzymes as soon as it enters the blood stream.
D) CK₁ is a neutral molecule and cannot be analyzed by electrophoresis.
Correct Answer:
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