Figure 2From: Proliferative cell nuclear antigen (PCNA) expression in the intestine of Salmo trutta trutta naturally infected with an acanthocephalanThe mean number of PCNA positive nuclei in the intestines of uninfected Salmo trutta trutta and in infected hosts at a distance from the point of parasite attachment. Error bars represent 95% confidence intervals (CI) about the mean. Abbreviations: ●, epithelial cells; □, mast cells; ▴, fibroblasts.Back to article page