Until 1996 he was also director of the biochemistry department at the Research Institute of Natural and Medicinal Sciences and of the Steinbeis-Transfer-Center Bioorganic Chemistry at the University of Tübingen.
EMC microcollections GmbH with Karl-Heinz Wiesmüller as the director with focus on the development of research tools, and peptides for the lead structure search and lipopeptide vaccines.
Jung's former PhD students Ingmar Hoerr and Florian von der Mülbe founded the biopharmaceutical company CureVac AG.
In his pioneering PhD thesis Ingmar Hoerr was the first to develop an RNA vaccine for the induction of specific cytotoxic T-lymphocytes (CTL) and antibodies.
The sequence motifs of MHC-bound natural peptide libraries (major histocompatibility complex) has been determined for the first time by Günther Jung's PhD student Stefan Stevanovic in cooperation with the cell-biological group of Hans-Georg Rammensee.