Source:http://linkedlifedata.com/resource/umls/id/C0036238
MSH: Defective viruses which can multiply only by association with a helper virus which complements the defective gene. Satellite viruses may be associated with certain plant viruses, animal viruses, or bacteriophages. They differ from satellite RNA; (RNA, SATELLITE) in that satellite viruses encode their own coat protein.,CSP: RNA molecules that depend on co-infection of a host cell with a helper virus for multiplication; most are associated with plant viruses.