title: Characteristics of a long term in vitro persistent infection with human coronavirus 229E.
mesh_terms: D002460:Cell Line; D003332:Coronaviridae / Q000254:growth & development* / Q000302:isolation & purification / Q000648:ultrastructure; D006801:Humans; D012367:RNA, Viral / Q000032:analysis; D013696:Temperature; D014774:Virulence; D014776:Virus Cultivation; D014779:Virus Replication
chemical_list: D012367:RNA, Viral