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Throughout mammalian spermatogenesis, preleptotene/leptotene spermatocytes traverse the blood–testis barrier during stages VIII–XI of the seminiferous epithelial cycle while trapped within a dynamic intermediate compartment that is sealed at north and south poles by tight junctions, basal ectoplasmic specializations, desmosomes and gap junctions. In order for spermatocytes to gain entry into the adluminal...
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