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TEM photograph of Sertoli cell in the ST. (A,B) in Feb; (C,D) in Dec; (E,F) in Feb. (B) shows higher magnification of the boxed area in (A). (D) Shows higher magnification of the boxed area in (C). Entotic vacuole (double white arrow), initial autophagic vesicles (AVis) (white arrow), degradative autophagic vesicles (AVds) (white arrowhead), Lipid droplet (Ld), sperm head (SH), small endosome vesicles (black arrow). Scale bar = 2 μm (A), 1 μm (B,C,E,F), and 500 nm (D).
