Affiliation: | 1. Department of Medical Chemistry, University of Szeged, Dóm tér 8, Szeged, 6720 (Hungary), Fax: (+36)?62‐545971;2. Department of Microbiology, University of Szeged, K?zép fasor 52, Szeged, 6726 (Hungary);3. Department of Organic Chemistry, University of Debrecen, Egyetem tér 1, Debrecen, 4010 (Hungary) |