Abstract
The results of a study on several parameters of congenital immunity and oxidative processes in the liver of spiny dogfish Squalus acanthias that inhabit the Caucasus coastal waters of the Black Sea with various anthropogenic loads are described. The antimicrobial properties of serum, the content of non-specific immune complexes in the liver, the total lipid value, and antioxidant activity were studied. It was determined that the ratio of immunodeficient individuals was much higher in samples from the polluted areas than in samples from the clean ones. The fish sampled in areas of high anthropogenic load contained higher contents of products of lipid peroxidation and immune complexes, as well as lower values of antioxidants.
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