KATARZYNA OBSZAŃSKA1, IZABELLA KERN-ZDANOWICZ1 and IZABELA SITKIEWICZ2* 1Department of Microbial Biochemistry, Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland 2Department of Molecular Microbiology, National Medicines Institute, Warsaw, Poland *Corresponding author: I. Sitkiewicz, Department of Molecular Microbiology, National Medicine...