Fig. 19. Histochemistry of normal human superior rectus muscle fibers: serial cross sections. Left-hand column, orbital layer; right-hand column, global layer. A and B. Gomori trichrome stain. C and D. Myosin ATPase, pH 4.6. E and F. Succinate dehydrogenase (SDH). G and H. Nicotinamide adenine nucleotide dehydrogenase-tetrazolium reductase (NADH-TR). I and J. Menadione-linked α-glycerophosphate dehydrogenase (men-α-GDP). (Courtesy of Dr. Robert Spencer.)