About the cover: Immunohistochemical detection of COX-1 (A and B), COX-2 (C and D), and neurofilament (NFL; E and F), performed on adjacent sections of colon from rats under normal conditions (A, C, E, and G) or with DNBS-induced colitis (B, D, F, and H). See the article by Fornai et al. on page 938 of this issue.