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The H-zone in the skeletal muscle fiber ...

The H-zone in the skeletal muscle fiber is due

A

The absence of myofibrils in the central portion of A - band

B

The central gap between myosin filaments in the A - band

C

The central gap between actin filaments extending through myosin filaments in the A - band

D

Extension of myosin filaments in the central portion of the A - band

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