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Histogram showing mean ± SD of slow myosin heavy chain (MHC) fiber type determined from immunofluorescent labeling of cross-sections from all 9 subjects. Abbreviations: IS, infraspinatus; SSC, subscapularis; SSP, supraspinatus; TMaj, teres major; TMin, teres minor. *Significantly less than SSP; §Significantly less than TMin.
