Detail of the Seminiferous Tubule cells
Green - Spermtagonia near suface of tubule. Orange -Primary spermatocyte with granular nucleus.
Black - Sertoli cell with a triangular shaped nucleus. Blue - Secondary spermatocyte near lumen.
Purple - Spermatozoa - elongated small nucleus. Note - Spermatogenesis proceeds from the surface
of the tubule to the lumen.

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