Fig. 3From: Prolidase deficiency, a rare inborn error of immunity, clinical phenotypes, immunological features, and proposed treatments in twinsSkin punch biopsy (sole) in Patient 1. Lobulated proliferation of capillaries, hemorrhage in dermis. The overlying epidermis is normal. No vasculitis. Hematoxylin–Eosin staining, × 400Back to article page