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Seminiferous tubules - convoluted portion
Spermatogonia and early primary spermatocytes are located in the basal compartment created by the blood-testis barrier. Older primary spermatocytes, secondary spermatocytes and spermatids, all located in the adluminal compartment, are provided with a specialized environment of high testosterone levels and protection from an autoimmune attack. 600x

Seminiferous tubule: Convoluted portion
Spermatogonia and early primary spermatocytes are located in the basal compartment created by the blood-testis barrier. Older primary spermatocytes, secondary spermatocytes and spermatids, all located in the adluminal compartment, are provided with a specialized environment of high testosterone levels and protection from an autoimmune attack. 600x

Spermatogonia
Spermatogonia and early primary spermatocytes are located in the basal compartment created by the blood-testis barrier. Older primary spermatocytes, secondary spermatocytes and spermatids, all located in the adluminal compartment, are provided with a specialized environment of high testosterone levels and protection from an autoimmune attack. 600x

Primary spermatocytes
Spermatogonia and early primary spermatocytes are located in the basal compartment created by the blood-testis barrier. Older primary spermatocytes, secondary spermatocytes and spermatids, all located in the adluminal compartment, are provided with a specialized environment of high testosterone levels and protection from an autoimmune attack. 600x

Spermatids (early)
Spermatogonia and early primary spermatocytes are located in the basal compartment created by the blood-testis barrier. Older primary spermatocytes, secondary spermatocytes and spermatids, all located in the adluminal compartment, are provided with a specialized environment of high testosterone levels and protection from an autoimmune attack. 600x

Spermatids (late)
Spermatogonia and early primary spermatocytes are located in the basal compartment created by the blood-testis barrier. Older primary spermatocytes, secondary spermatocytes and spermatids, all located in the adluminal compartment, are provided with a specialized environment of high testosterone levels and protection from an autoimmune attack. 600x

Residual bodies
Spermatogonia and early primary spermatocytes are located in the basal compartment created by the blood-testis barrier. Older primary spermatocytes, secondary spermatocytes and spermatids, all located in the adluminal compartment, are provided with a specialized environment of high testosterone levels and protection from an autoimmune attack. 600x

Sertoli cells
Spermatogonia and early primary spermatocytes are located in the basal compartment created by the blood-testis barrier. Older primary spermatocytes, secondary spermatocytes and spermatids, all located in the adluminal compartment, are provided with a specialized environment of high testosterone levels and protection from an autoimmune attack. 600x

Tunica propria
Spermatogonia and early primary spermatocytes are located in the basal compartment created by the blood-testis barrier. Older primary spermatocytes, secondary spermatocytes and spermatids, all located in the adluminal compartment, are provided with a specialized environment of high testosterone levels and protection from an autoimmune attack. 600x

Leydig cells
Spermatogonia and early primary spermatocytes are located in the basal compartment created by the blood-testis barrier. Older primary spermatocytes, secondary spermatocytes and spermatids, all located in the adluminal compartment, are provided with a specialized environment of high testosterone levels and protection from an autoimmune attack. 600x

Image source >
Image taken of a slide in the University of New England College of Osteopathic Medicine slide collection.