Sezione di Anatomia Veterinaria, Dipartimento di Scienze Biopatologiche ed Igiene delle Produzioni Animali e Alimentari, Perugia, Italy. firstname.lastname@example.org
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- Fig. 1. Primary and secondary hair follicles in a longitudinal section. In the proximal portion, immunohistochemical staining for CB1 is evident (arrows); it pertains to the inner root sheath. The outer root sheath, the hair and the dermal papilla are negative. ORS, outer root sheath; DP, dermal papilla; PF, primary hair follicle; SF, secondary hair follicle. DAB staining. Scale bar = 100 μm.
- Fig. 2. Two hair follicles in a slightly oblique section. At the level of the bulb (B), a discrete population of cells expresses the cannabinoid receptor 1 (arrows) while the other cells of the matrix are negative. In the suprabulbar region (SB), immunostaining clearly evidenced the inner root sheath (arrowheads) situated between the hair (H) and the outer root sheath (ORS). VIP staining. Scale bar = 50 μm.