Figure 7. Histological features of donkey skin. Hematoxylin and eosin staining (A-C; G-H); Crossman's trichrome staining (D-F); and PAS staining (I) of donkey skin tissue sections.

(E) Keratinized stratified squamous epithelium of the epidermis; (PL) Papillary layer of the dermis; (RL) Reticular layer of the dermis; (SG) Sebaceous glands; (Arrow heads) collagen bundles of the reticular layer; (Yellow arrow) Sweat glands; (HD) hypodermis; (HF) Primary follicle of the compound hair surrounded by secondary follicles.