text:  Patient P, lesional skin Human skin biopsy from psoriatic patient (lesional skin) Patient identifyier: P; Sex: male; Age of patient: 76 years; Duration of psoriasis: 56 years; Body surface area: 15 percent; Overall erythema: mild; Induration: mild (classified by the investigators according to the following six grades: clear - minimal - mild - moderate - severe - very severe); Scaling: minimal (classified by the investigators according to the following six grades: clear - minimal - mild - moderate - severe - very severe)