Antibody production in some species of Amphibian (Anura and Urodela) has been studied; bacteria, viruses and proteins were used as antigens. The electrophoretic study of sera of immunized animals showed the appearence of a new fraction of $\gamma$-globulins. Sera electropherograms of other species of Amphibia demonstrate a remarkable variability in the percentage of $\gamma$-globulins.
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Con il contributo del Ministero per i Beni e le Attività Culturali