 His doctoral thesis focused on the congenital disorders in children, taking into account the distribution of atmospheric pollution with heavy metals.Between 1993–2005 he worked as an assistant professor at the Institute of Pharmacology of the Polish Academy of Sciences, at the Department of Brain Biochemistry headed by Jerzy Vetulani.Since 1995, he worked also at the Jagiellonian University Medical College (CMUJ), at the Department of Allergy and Immunology and as Head of the Laboratory of Molecular Biology, Department of Internal Diseases, running research mostly in the fields of genetics and molecular biology.