Fig. 5.

EM immunogold labeling of Golgi complex proteins in skeletal muscle. Typical stacks of cisternae (arrows) are found at the nuclear poles (a, c–e), in the myofibrillar core of the fibers (b, d), and elsewhere in the cytoplasm (e, f) of soleus (a–d) and RG fibers (e, f). Immunogold labeling for MG160 (a, b) is confined to the middle to trans-cisternae, whereas TGN38 (c) and GLUT4 (d–f) are found in the TGN area. N, Nuclei; M,mitochondria; I, I-band; A, A-band. Scale bars: a–d, 200 nm; e, f,500 nm.