- Received May 23, 2012.
- Accepted July 2, 2012.
- Published online July 25, 2012.
Copyright & Usage
© 2012 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/3.0/, which permits unrestricted use, provided the original author and source are credited.
- 1Ludwik Hirszfeld Institute of Immunology and Experimental Therapy, Polish Academy of Sciences, ul. Weigla 12, 53114 Wrocław, Poland
- 2Faculty of Biotechnology, University of Wrocław, ul. Tamka 2, 50137 Wrocław, Poland