This article presents the research aimed at studying the effect of mycotoxin DON on the structural organization of the liver of common carp. As a result of the studies of the food basis of aquatic organisms, the mycotoxin DON was identified in the feed, under the effect of which the protein-water-electrolyte metabolism was disturbed in the liver cells of the common carp (Cyprinus carpio), which led to hydropic degeneration. This indicates an adverse anthropogenic effect on commercial fish.

The study presents the data on the level of expression of pro- and anti-inflammatory cytokines in piglets with gas-trointestinal diseases of bacterial etiology. The analysis of gene expression showed that the expression levels of IL-1α and IL-10 were significantly increased in sick piglets, while IL-1β lost its activity. During the histological examination, there were no differences between the structure of the intestines of sick and healthy piglets. However, cytological examination: of the samples obtained from sick piglets demonstrated alteration and a decrease in the adhesive barrier in the epithelium of intestinal villi.