EN
The activity of aspartate (AsAT) and alanine (A1AT) aminotransferases was examined in liver, head kidney, excretory kidney and sppleen of the carp (Ciprinus carpio L.) with erythrodermatitis. In all the organs studies except liver a general decrease in the activity of both aminotransferases was found as compared with their activity in tissues of healthy fish. This may reflect a disfunction of those organs as a result of a long-lasting effect of the pathogenic factor.