“…In the male accessory sex glands of rats, the prostate and coagulation glands are considered to be the origin of the urogenital sinus, while the ejaculatory duct system, including the deferent ducts, seminal vesicles, ampullary glands, and the ducts of all prostate lobes, is considered to derive from the Wolffian ducts (Price, ; Jones et al., ; Jesik et al., ; Tamano et al., ). While because of its anatomical complexity, a uniform histopathological evaluation of the accessory sex glands is difficult and, therefore, may introduce observer bias (Aumuller et al., ; Wakui et al., ). Although the ejaculatory duct system of male rodents has been previously described, major concerns remain regarding the formation of the terminal regions of ejaculatory duct system (Tamano et al., ; Pinheiro et al., ; Aumuller et al., ; Wakui et al., ).…”