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Schematic representation to highlight the organization of the TBCs during the late phase of mouse spermiogenesis. (a) Late spermatid surrounded by Sertoli cell cytoplasm. (b) Stages of the endocytic pathway linked to TBCs indicated with arrows. (c) TBC sub-compartments. SC, Sertoli cell; SpT, spermatid; green lines—actin filaments, red line in a/b—apical ES, red line in c—clathrin coat, purple line in b/c—acrosome, and blue—ER.
