Fig. 4From: Ceasing of muscle function with aging: is it the consequence of intrinsic muscle degeneration or a secondary effect of neuronal impairments?Transmission electron micrograph from a transversal section of the gluteus medius muscle of a 68-year-old man, illustrating a neuromuscular junction with marked signals of mitochondrial degeneration. The nucleus has a scalloped surface and there are lipofuscin granules between the small mitochondria (original magnification: 5,400×)Back to article page