Seminars The seminars are common to the two curricula and will take place from 31/05/2021 to 31/10/2021. Following the Covid-19 pandemic emergency, in compliance with the prevention criteria and protection indicated by the University High-Security Office, the date and method of delivery will be communicated directly to the doctoral students via institutional e-mail. Hepatic microcirculation: role of the peribiliary plexus. Prof. Onori Liver and Atherosclerosis Prof. Gaudio Experimental models of cirrhosis Prof. Franchitto Hepatic circulatory territories: the hepatic segments Prof. Onori Biliary tract. Prof. Franchitto Cholangiocyte proliferation in cholestatic and neoplastic pathology Prof. Alvaro Role of growth factors on the proliferation of cholangiocytes in primary cultures. Prof. Mancinelli Hepatic role of IGF-I Prof. Franchitto Pathogenetic mechanisms of steatosis and hepatic fibrosis evolutionary in HCV infection. Prof. Ginanni Corradini Cellular cross-talk in the pathogenesis of NAFLD. Prof. Carpino 1234