Jan Zeromski has completed his MD and PhD from Poznan University of Medical Sciences, Poznan, Poland. He performed his postdoctoral studies at Glasgow University, Dept Immunology, Glasgow Scotland U.K. and at Stockholm University, Wenner Gren Institute, Immunology Dept., Stockholm, Sweden. His research interests include immunopathogenesis of human cancer and, in particular, the events within local tumor microenvironment. Currently, he is a retired professor at the Chair of Clinical Immunology of Poznań University of Medical Sciences, Poznań, Poland.