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Fig. 7. Sarcolemmal focal adhesion kinase (FAK) immunoreactivity in muscle fibres
during the slow- to fast-twitch transformation. Sarcolemmal FAK
immunoreactivity (A, FAK antiserum A-17; B, control reaction) and fibre type
(C, fast myosin) were determined on consecutive cryosections of soleus muscle
10 months after cross-reinnervation (X-SOL) with the nerve supply of the
fast-twitch extensor digitorum longus muscle. The fibre types are indicated.
Scale bar, 100 µm.