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Electron micrograph of a Sertoli cell process in October. Sertoli cells containing several long mitochondria and microtubules (A). The process of the germ cell contained glycogen granules (arrow) (B). SC, Sertoli cell; ER, endoplasmic reticulum; m, mitochondria; Mt, microtubules; V, vesicle; L, lipid droplet. Scale bar = 2 μm (A) and 500 nm (B).
