1. Department of Pharmacognosy, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary
2. Institute of Chemistry, Chemical Research Centre, Hungarian Academy of Sciences, H-1525 Budapest, Hungary
3. Department of Pharmacodynamics and Biopharmacy, University of Szeged, H-6720 Szeged, Hungary
4. Department of Medical Microbiology and Immunobiology, University of Szeged, H-6720 Szeged, Hungary