In the given diagram,which label represents t | vedclass

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(D) In the structure of a sarcomere:$P$ represents the $Z$-line (or $Z$-disc),which bisects the $I$-band.$Q$ represents the $M$-line,which is the cent

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$S$

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(D) In the structure of a sarcomere:$P$ represents the $Z$-line (or $Z$-disc),which bisects the $I$-band.$Q$ represents the $M$-line,which is the central line in the $A$-band.$R$ represents the $H$-zone,which is the central part of the $A$-band containing only thick filaments.$S$ represents the $I$-band (isotropic band),which contains only thin filaments and is bisected by the $Z$-line.Therefore,the correct label for the $I$-band is $S$.

In the given diagram,which label represents the $I$-band?

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