Non-A, non-B hepatitis viruses.

INTRODUCTION 217 EVIDENCE FOR MULTIPLE VIRUSES Role of Cytomegaloviruses . .. . .... . . . ......... ...... 218 The Water-borne Agent(s) 219 Blood-borne Agents 219 ULTRASTRUCTURAL CHANGES IN NANB INFECTION 221 VIRUS-LIKE PARTICLES ASSOCIATED WITH NANB INFECTIONS 224 ANTIGENS ASSOCIATED WITH NANB INFECTIONS ... 226 IS A NANB VIRUS RELATED TO HBV? ... . 228 PERSPECTIVES FOR PREVENTION OF NANB INFECTION Detection of Carriers by AL Transferase Screening 229 Inactivation of NANB Viruses in Blood Derivatives 229 CONCLUSIONS ...... .. . . . . . . . . . ......... . . . ........ . . . . . .. . . . . . . . . . . . .. . . . . . . . . . . . 230