[Monoclonal antibodies against differentiation antigens of carp thymocytes (Cyprinus carpio L.)].

Using the cell fusion technique we have produced monoclonal antibodies directed against carp thymocytes. The monoclonals revealed a different ability for binding to carp lymphocytes of various origin. The antibodies reacting only with lymphocytes seem to react with a membrane structure of a molecular weight of 200 000 to 250 000 daltons.