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. 2009 Jul 9;107(3):763–769. doi: 10.1152/japplphysiol.91654.2008

Table 1.

MHC composition from the vastus lateralis of young and older participants

n MHC I MHC IIA MHC IIX
Young 5 65±7 (59–74) 32±7 (26–41) 3±0 (0–14)
Old 7 57±15 (38–79) 31±7 (21–38) 12±16 (0–31)

Values are means ± SD (range) in percent; n, no. of subjects. MHC, myosin heavy chain.