Figure 2From: Intestinal cellular localization of PCNA protein and CYP1A mRNA in Atlantic salmon Salmo salar L. exposed to a model toxicantLight photomicrographs of PCNA labelled nuclei in the mid intestine (MI) of Atlantic salmon (A) In the control group, proliferating cells (PCNA) can be seen (strong black nuclear staining) in several cells in the basal area of the intestinal folds (B) In the treated group, proliferating cells (PCNA) can be seen (weak faint nuclear staining) only in a few cells in the basal area of the intestinal fold.Back to article page