This study describes histology of uterus in the Albino Wistar rat induced with oestrous. Twenty adult female Wistar rats were used in the study. Ten rats were induced with estrous using Diethylstilbestrol 1 mg/kg b.wt subcutaneously for three consecutive days. Uteri were obtained from both groups after three days upon induction of diestrous stage. Endometrial histology in both the groups displayed glandular mucosa comprising of lamina epithelialis and lamina propria mucosae. The epithelium was stratified cuboidal with numerous neutrophils and lymphocytes in the lamina propria mucosa. The cellularity was more in the estrous induced group. Lamina muscularis was absent in the tract of both groups. The uterine glands occurred in variable numbers and sizes in the propria-submucosae of the estrous induced group of rat uterii. These glands were lined by simple cuboidal epithelium. The myometrium consisted of inner circular and outer longitudinal layer wherein the smooth circular layer was comparatively thicker than the longitudinal layer in both groups. Stratum vasculare containing prominent blood vessels was well appreciated between the two muscular layers. The perimetrium comprised of simple squamous epithelium.

Highlights

• The cellularity was more in the lamina propria mucosae of the estrous induced group.
• Lamina propria contained numerous blood vessels and endometrial glands during estrus.
• Vasculature was more appreciated in the oestrous induced group.