32-Title: Histogenesis of the interstitial cells and the reti ovarii in camel (Camelus dromedarius)

32-Title: Histogenesis of the interstitial cells and the reti ovarii in camel (Camelus dromedarius)

Authors: Hidaia B Zolain and Dafaalla I Osman

Source: Ruminant Science (2021)-10(1):165-168.

How to cite this manuscript: Zolain Hidaia B and Osman Dafaalla I (2021). Histogenesis of the interstitial cells and the reti ovarii in camel (Camelus dromedarius). Ruminant Science 10(1):165-168.


This study was conducted in 30 female foetuses of camels at different stages of prenatal development from differentiation up to the full term. The routine histological stain was used. The interstitial cells with large dark nuclei and strong acidophilic cytoplasm were found singly during the early stages of development which proliferated to form islets in the vicinity of the blood vessels, with the advancing stages. It was suggested that the interstitial cells in the prenatal camel arrived   from the mesonephric tissue like the other domestic animals.


Abdel Hafez EW (2004). Histomorphological studies on the development of the ovary of one-humped camel. PhD Thesis submitted to the University of Assiut, Faculty of Veterinary Medicine, Egypt.

Archbald LF, Schultz RH, Fahning ML, Kurtz HJ and Zemjanis R (1971). Rete ovarii in heifers: A preliminary study. Journal of Reproduction and Fertility (26):413- 414.

Arey LB (1974). The genital system. In: Developmental Anatomy. 7th Edn, WB Saunders Company-Philadelphia and London. pp 315-341.

Bancroft JD and Stevens SA (1990). Theory and Practice of Histological Techniques. 4th Edn, New York.

Byscov AG (1986). Differentiation of mammalian embryonic gonad. Physiology Review 66:71-117.

Byscov AG, Høyer PE and Westergaard L (1985).  Origin and differentiation of the endocrine cells of the ovary. Journal of Reproduction and Fertility 75:299-306.

Byscov AG and Moore SL (1973). Follicle formation in the immature mouse ovary: The role of the rete ovarii. Journal of Anatomy 116(2):207-217.

Byscov AG (1975). The role of the rete ovarii in meiosis and follicle formation in the cat, mink and ferret. Journal of Reproduction and Fertility 54:201-209.

Culling CFA (1970). Handbook of Histopathological and Histochemical Techniques. Elsevier.

Drury RA and Wallington EA (1980). Carleton’s Histological Technique. 5th Edn, Oxford University Press, New York.

Deanesly R (1970). Oogenesis and development of ovarian interstitial tissue in ferret. Journal of Anatomy 107(1):165-178.

El-Wishy AB, Hemeida NA, Omar MA, Mobarak AM and El-Sayed MAI (1981). Functional changes in the pregnant camel with special reference to fetal growth. British Veterinary Journal 137:527-537.

Fawcett DW (1986). Female Reproductive System. In: Textbook of Histology. 11th Edn, WB Saunders Company. Philadelphia. pp 851-900.

Gondos B and Hobel CJ (1973). Interstitial cells in the human foetal ovary. Endocrinology 93(3):736-739.

Hay MF and Allen WR (1975). An ultrastructural and histochemical study of the interstitial cells in the gonad of the foetal horse. Journal of Reproduction and Fertility 23(S):557-561.

Janis PD and Rudolf L (2006). Female reproductive system. In: Dellmans Textbook of Veterinary Histology. Eds: JA Eurell and BL Frappier. 6th Edn. pp 256-257.

Juengel JL, Sawyer HR, Smith PR, Quirke LD, Heath DA, Lun S, Wakefield SJ and McNatty KP (2002). Origins of follicular cells and ontogeny of steroidogenesis in ovine foetal ovaries. Molecular Cell Endocrinology 191(1):1-10.

Kumari Nawesha, Bansal Neelam, Uppal Varinder and Gupta Anuradha (2016). Histochemical studies on ovarian rete system of buffaloes. Ruminant Science 5(2):173-177.

Laurel D, Quirke JL, Juengel DJ, Tisdall S, Heath DA and McNatty KP (2001). Ontogeny of steroidogenesis in the foetal sheep gonad. Biology of Reproduction 65(1):216-228.

McGeady TA, Quinn PJ, FitzPatirick ES and Rayan MT (2006). Male and female reproductive system. In: Veterinary Embryology. Blackwell, pp 244-267.

Mohammed AY (1996). Morphological studies on the ovary of one-humped camel (Camelus dromedarius). MVSc Thesis submitted to Faculty of Veterinary Medicine. University of Khartoum.

Motta PM and Makabe S (1982). Development of the ovarian surface and associated germ cells in the human fetus. A correlated study by scanning and transmission electron microscopy. Cell Tissue Research 226:493-510.

Osman MM (2007). Morphology and morphometry of the ovary of the dromedary camel (Camelus dromedarius) with emphasis on the effect of season. MVSc Thesis submitted to Faculty of Veterinary Medicine University of Khartoum.

Sakai T (1955). Studies of the development of the embryonic ovary in swine, cattle and horse. Japan Journal of Veterinary Research 3(4):183-198.

Sardul SG and Gilbert SG (2005). A histochemical study of the humester ovary. American Journal of Anatomy 116(1):257-267.

Satoh M (1991). Histogenesis and organogenesis of the gonad in human embryos. Journal of Anatomy 177:85-107.

Shehata R (1994). Medullary tubes in the ovary of camel and the other mammals. Veterinary  Record 76(7):750-753.