1. Department of Genetics and Biotechnology; Ivan Franko National University of Lviv; 4 Hrushevskoho st. Lviv 79005 Ukraine
2. Department of Microbiology and Immunobiology; Harvard Medical School; 4 Blackfan Circle Boston MA 02115 USA
3. Helmholtz Institute for Pharmaceutical Research, Saarland Campus; Building C2.3 66123 Saarbrucken Germany