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Testicular ultrastructure of the Sertoli cell. (A and B) Control animals showing the nucleus (N) and nucleolus (Nu), tight junctions (J) and other intact cellular organelles (star). (C) The animals in 12.5 mg/kg BW/day experimental group showing shrunken Sertoli cell nucleus (N) with secretory products. (D) Ultrastructure of vacuolated and degenerating germ cells (arrow). Scale bar for all is 2 μm except for (A) is 0.2 μm.
