Histological features and muc1 distribution in the palpebral conjunctiva of the dromedary camel (Camelus Dromedarius)‎

Abstract EN

The conjunctiva is important adnexa of the eye that maintains the stability of the tear film.

The objective of current study is to describe the histological features of palpebral conjunctiva of the dromedary, emphasizing the distribution of Muc1 using indirect tissue immunofluorescence technique.

Conjunctival samples of ten adult, apparently healthy dromedary camels of both sexes were collected, fixed, embedded in paraffin and stained with H&E for general histological structure, Masson´s trichrome for fibrous tissue, Periodic acid–Schiff (PAS) for goblet cells and immunofluorescence for the distribution of Muc1.

The palpebral conjunctiva of the dromedary camel is lined with stratified squamous to stratified columnar epithelium.

Large numbers of goblet cells were identified associated with conjunctival epithelial cells.

The lamina propria consisted of loose superficial cell layer and a deeper tarsal plate.

Within the lamina propria, there were lymphoid follicles, numerous tarsal glands and palpebral seromucoid glands.

The palpebral conjunctiva and associated palpebral glands were stained positive for PAS and Muc1.

In conclusions, the eye of the dromedary camel is protected with a palpebral conjunctival tissue that is richly populated with PAS positive cells and numerous Muc1-producing cells