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Recombinant plasmid DNA pPR-IL2-19 coding for synthesis of human interleukin-2 and strain of bacteria Eschirichia coli /V.G.Debabov, E.Y.Gren, J.I.Kozlov et al.//UK Patent Appl. G.B. 2210373, Pub 7 Jun. 1989. Appl. SU 4191355, filed 9 Feb.1987.
