title: [HEPATITIS VIRUSES; HISTORICAL CONSIDERATIONS AND PROBLEMS].
mesh_terms: D001798:Blood Proteins; D002965:Classification; D004813:Epidemiology; D006505:Hepatitis; D006506:Hepatitis A; D006515:Hepatitis B virus; D006518:Hepatitis Viruses; D006664:History; D006801:Humans; D007783:Lactones; D010827:Physiology; D011315:Preventive Medicine; D013449:Sulfonamides; D014776:Virus Cultivation
chemical_list: D001798:Blood Proteins; D007783:Lactones; D013449:Sulfonamides
keywords: BLOOD PROTEINS; CLASSIFICATION; EPIDEMIOLOGY; HEPATITIS VIRUSES; HEPATITIS, HOMOLOGOUS SERUM; HISTORY; LACTONES; PHYSIOLOGY; PREVENTIVE MEDICINE; SULFONAMIDES; VIRUS CULTIVATION