Figure 3

Revelation of ATPase at pH 4.2 and succinate dehydrogenase (SDH) activities in RA and TB muscles of steers. The width of each figure is 400 μm. A, C: RA muscle. B, D : TB muscle. A, B: revelation of ATPase activity at pH 4.2. The slow fibres (S) are coloured dark grey while fast ones (F) are coloured white or grey. C, D: revelation of Succinate DeHydrogenase activity. The oxidative fibres (SO) are coloured dark blue while glycolytic and oxidative-glycolytic ones (FG and FOG) are coloured pale blue. Scale of the cross-section : 600 μm (length)/400 μm (height).