Table 2.

Definition of terms referred to in human and mouse vaginal development.

Human terms	Definition
Uterovaginal canal (Koff, 1933)	The fused Müllerian ducts located in the pelvic midline.
Müllerian tubercle (Fritsch et al., 2013; Koff, 1933)	The Müllerian tubercle is the initial point of contact of the Müllerian ducts and with the UGS.
Sinovaginal bulb (Koff, 1933; Shapiro et al., 2000)	Cranial expansion of urogenital sinus epithelium that contributes to the vaginal plate
Vaginal plate (Koff, 1933)	A solid epithelial plate in the caudal uterovaginal canal
Mouse terms
Müllerian vagina (Kurita, 2011)	The cranial portion of the perinatal mouse vagina. The epithelium, which transforms from simple columnar to stratified squamous, is derived from the fused Müllerian ducts
Sinus vagina (Kurita, 2011)	A solid dorsal process of the urogenital sinus that joins with the Müllerian vagina.