Immunoperoxidase labelling of sections with affinity purified chicken anti-ITLN peptide 1. Abomasum (A), colon (B), small intestine (C), Peyer’s patches and ileum (D), large bronchus (E), dermis/epidermis (F), heart muscle and fat (G), skin sebaceous gland (H), kidney (I). Arrows indicate positive immunolabelling. Control IgY labelling was negative (not shown). Bars represent 50 μm (B, D, E, H, I), 100 μm (A, C, F), 200 μm (G).