**Author details**

Dilyana Nikolova1 \*, Ramize Hoxha1 , Nikola Atanasov1 , Elena Trifonova1 , Lili Dobreva2 , Veronica Nemska<sup>3</sup> , Yana Evstatieva1 and Svetla Danova<sup>2</sup> \*

1 Faculty of Biology, Department of Biotechnology, Sofia University "St. Kliment Ohridski", Sofia, Bulgaria

2 The Stephan Angeloff Institute of Microbiology, Bulgarian Academy of Sciences, Associated with Institute Pasteur International Network, Sofia, Bulgaria

3 Faculty of Chemical and System Engineering, Department of Biotechnology, University of Chemical Technology and Metallurgy, Sofia, Bulgaria

\*Address all correspondence to: d.nikolova@biofac.uni-sofia.bg and stdanova@yahoo.com

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