The experiment was carried out on white Wistar rats. The rats in the experimental groups received fodder containing power station ashes for various periods of time (from 6 to 18 weeks). During the experiment, the body weight of rats was recorded, the amount of trace elements in the liver was estimated, and morphological tests of the liver were carried out. The results of these experiments indicate that feeding the rats on fodder containing power station ashes causes several percent increase in the body weight and slight differences in accumulation of trace elements. Morphological changes in the liver are connected with the vacuolization of the hepatocytes' cytoplasma and an increase in the amount of phagocytic cells in hepatic sinuses. The intensity of morphological changes was correlated with the time of experiment.
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