The epididymal duct unit, comprising the ductus conjugens, ductus epididymidis and ductus deferens, was studied histologically, ultrastructurally and immunohistochemically in five sexually mature and active birds. The main morphological features of the pre-dominant non-ciliated (type III) cell of the epithelial lining of this duct unit include, but are not limited to, a moderately abundant smoo...

An eighteen month old phenotypically and genotypically normal male child was admitted with a left inguinal hernia and a right undescended testis. At operation, he was found to have a uterus, bilateral fallopian tubes, and a vagina in the left hernial sac. Bilateral orchidopexies and excision of the persistent Mullerian duct structures were carried out. This rare case of persistent Mullerian duc...

During development of the urogenital tract, fibroblast growth factor 8 (Fgf8) is expressed in mesonephric tubules, but its role in this tissue remains undefined. An evaluation of previously generated T-Cre-mediated Fgf8-deficient mice (T-Cre; Fgf8(flox/Δ2,3) mice), which lack Fgf8 expression in the mesoderm, revealed that the cranial region of the Wolffian duct degenerated prematurely and the c...

Reproductive parameters evaluation is considered as helpful tool for gene bank formation in ecological and economically important animals species. Gloydius halys caucasicus is venomous, viviparous pit viper of northwest of Iran. In this research, the spermatic reproductive parameters of this taxon were studied. Twenty six male snakes were collected from Takht-e-Soleiman region between September...

Persistent müllerian duct syndrome (PMDS) is a rare form of male pseudohermaphroditism, characterized by the presence of a uterus and fallopian tubes owing to failure of müllerian duct regression in genotypically normal males. The association between a persistent müllerian duct and transverse testicular ectopia (TTE) is even more uncommon. PMDS with TTE is a very rare pathological association, ...

Persistent müllerian duct syndrome (PMDS) is a rare form of male pseudohermaphroditism, characterized by the presence of a uterus and fallopian tubes owing to failure of müllerian duct regression in genotypically normal males. The association between a persistent müllerian duct and transverse testicular ectopia (TTE) is even more uncommon. PMDS with TTE is a very rare pathological association, ...

Between June 1997 and September 1999, we performed transurethral unroofing (TUUR) in three patients with hematospermia that recurred repeatedly for one year or more. Patient 1 (48 years old) and Patient 2 (59 years old) were diagnosed as having müllerian duct cysts that communicated with the left ejaculatory duct, and Patient 3 (36 years old) as an ejaculatory duct obstruction with the right ej...

The mammalian pro- and mesonephros are transient embryonic kidneys essential for urogenital system development. The nephric (Wolffian) duct, which is a central constituent of both structures, elongates caudally along a stereotypical path to reach the hindlimb level where it induces metanephros (adult kidney) formation, while the remaining duct gives rise to the male genital tract (epidydimis, v...

Metanephric kidney induction critically depends on mesenchymal-epithelial interactions in the caudal region of the nephric (or Wolffian) duct. Central to this process, GDNF secreted from the metanephric mesenchyme induces ureter budding by activating the Ret receptor expressed in the nephric duct epithelium. A failure to regulate this pathway is believed to be responsible for a large proportion...

reproductive parameters evaluation is considered as helpful tool for gene bank formation in ecological and economically important animals species. gloydius halys caucasicus is venomous, viviparous pit viper of northwest of iran. in this research, the spermatic reproductive parameters of this taxon were studied. twenty six male snakes were collected from takht-e-soleiman region between september...