 In 1991 he worked as a visiting professor at McMaster University in Hamilton, Canada, with the team of a Canadian immunologist, professor Jack Gauldie.During his academic career, he also held various managerial positions at the University of Lodz.Between 1987 and 1990, he was the vice-dean of the Faculty of Medicine, and from 1993 to 1996, the vice-rector for didactics and education.