Włodzimierz Ptak
Włodzimierz Wojciech Ptak, M.D. (born 2 November 1928 in Kraków, Poland) is a Polish immunologist and microbiologist, professor of immunology in Jagiellonian University Medical College (retired). Member of the Polish Academy of Sciences since 1986 and Polish Academy of Learning since 1989. In 1977 he was decorated with a Knight's Cross of Polonia Restituta, and in 1997 with a Commander's Cross of Polonia Restituta.
