title: [Clinico-biological observations of a group of 221 HBsAg positive donors followed for several years].
mesh_terms: D001782:Blood Donors; D005500:Follow-Up Studies; D006509:Hepatitis B / Q000175:diagnosis* / Q000276:immunology; D006514:Hepatitis B Surface Antigens; D006801:Humans
chemical_list: D006514:Hepatitis B Surface Antigens
vernacular_title: Osservazioni clinico-biologiche su di un gruppo 221 conatori HBsAg positivi seguiti iper diversi anni.