(A) Longitudinal section of the transition (arrow) between a testicular follicle (f) and its efferent duct (ef), of a 10 day-old adult, (B) DAPI of a 9 day-old adult seminal vesicle, with some luminal cell structures (open arrows), some free spermatozoa (z) and some sperm bundles (b), (C) TEM of an efferent duct of a 14 day-old adult, with free spermatozoa in the lumen. (e) Efferent duct epithelium, (mv) microvilli, (n) nuclei of epithelial cells, (z) free spermatozoa in the follicle.