A summary of the results obtained in the collaboration between the laboratory of Prof. Viktor Mutt at Karolinska Institutet and our laboratory at Stockholm University, headed by Prof. Tamas Bartfai, is given. It is demonstrated that the contribution of Viktor Mutt to the discovery and study of bioactive peptides has led to several further developments, which extend far beyond the original goals of his study and allow us to discuss their importance today and in the future. This perspective has made the contribution of Viktor Mutt to bioactive peptide research excellent and extraordinary.
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