Received: 19 December 2017
Accepted: 1 March 2018
First Online: 9 March 2018
: Experiments with animals were conducted in accordance with the international principles of the European Convention for the protection of vertebrate animals under a control of the Bio-Ethics Committee of the abovementioned institution. The cell line was obtained from the Collection of Microorganisms and Cell Cultures of the Leibniz Institute DSMZ-German.
: The authors declare that they have no competing interests.
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