“Histogenesis of the Vagina of the One-Humped Camel (Camelus dromedarius): Morphological Evidence of the Histochemical Aspects,” Sameh Mohamed Farouk, Abdel-Hamid Kamel Osman [pictured here, lecturing in Japan] and Hussein Eidaroos, Cell and Developmental Biology, vol. 1, no. 3, 2012.
The authors, at Suez Canal University, Ismailia, Egypt, report:
“At the end of developmental stages, the lamina epithelialis became stratified squamous non-keratinized epithelium with slightly wavy basement membrane. The vaginal masculosa was differentiated into three layers; inner and outer longitudinal layers and middle circular one of smooth muscle bundles. With increasing age, a gradual increase of acid phosphatase, ATPase and Succenic dehydrogenase (SDH) reaction was observed especially in the epithelial lining and muscular coat of the vagina. A progressive increase of sudanophilic reaction and alkaline phosphatase activity was noticed among the different layers of the vaginal wall through the studied stages.”
(Thanks to investigator Marty Chalfie for bringing this to our attention.)