Włodzimierz Ptak

Włodzimierz Wojciech Ptak (2 November 1928 – 28 May 2019) was a Polish immunologist and microbiologist. In 1986, he became a member of the Polish Academy of Sciences and the Polish Academy of Learning. He was a professor at the Medical Academy in Kraków, later transformed into the Jagiellonian University Medical College.
In his scientific work, Ptak was known for his work on regulatory mechanisms of the immune response. He published more than 200 original research papers, and was one of the most cited Polish scientists in the field of biomedicine after 1965.