JEB -- Kanatous et al. 205 (23): 3601 Figure IG4

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Fig. 4. Histogram showing fiber-type composition (% of total fiber number) in the swimming (M. longissimus dorsi and hindlimb) and non-swimming (M. pectoralis) muscles of Weddell seals. Note the lack of fast-twitch glycolytic (Type IIB) fibers in all the muscles measured.