Morphology and Histology of the Orbital Region and Eye of the Asiatic Black Bear (Ursus thibetanus)-Similarities and Differences within the Caniformia Suborder.

ABSTRACT: In this study, we present first data concerning the morphological observations of the orbital region, eye tunics, upper and lower eyelids, superficial gland of the third eyelid with the third eyelid, and lacrimal gland in captive adult male Asiatic black bear. The following research methods were used in the work: the eyeball morphometry, the orbital region description, macroscopic description, morphometric and histological analysis of the eye tunics and selected the accessory organs of the eye (Fontana-Masson, hematoxylin & eosin (H&E), Methyl-green-pyronin Y (MGP Y), Movat pentachrome, and picro-Mallory trichrome) as well as histochemical examination (PAS, AB pH 1.0, AB pH 2.5, AB pH 2.5/PAS and HDI). The eyeball of the Asiatic black bear was a spherical shape, while the periorbita was fu

SUBMITTER: Paszta W 

PROVIDER: S-EPMC8997068 | biostudies-literature | 2022 Mar

REPOSITORIES: biostudies-literature