Abstract
In the present study, the parotoid region, dorsal and ventral integuments of Lyciasalamandra billae and Lyciasalamandra luschani basoglui were investigated in terms of localization of hyaluronic acid (HA) and histochemical characteristics. HA immunoreactivity was carried out using biotinylated hyaluronic acid binding protein (B-HABP) labelled with streptavidin-fluorescein isothiocyanate (FITC). HA was mainly localized in the stratum spongiosum of L. billae and L. luschani basoglui for water homeostasis and skin functionality. Light microscopic observations revealed that the dorsal and ventral integuments of L. billae and L. luschani basoglui exhibited basic morphological characteristics of other amphibians: the epidermis was composed of a stratified squamous epithelium and the dermis subdivided into stratum spongiosum and stratum compactum. Two different types of dermal glands (mucous and granular glands) were identified in the spongious dermis of the dorsal and ventral integuments whereas in the parotoid region, three different types of glands (mucous, granular and parotoid glands) were examined.
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