A reverse-genetics system for measles virus strain Shanghai-191(MV-_(S191))was constructed.The genomic RNA of MV-_(S191) was extracted.Seven fragments covering full-length genomic cDNA were amplified by reverse transcription-polymerase chain reaction(RT-PCR).A full length anti-genome was designed to fuse the nucleotide of the viral sequence with hammerhead ribozyme(HamRZ)and hepatitis delta virus ribozyme(HdvRZ)sequence,and then pT7MV_(S191) was constructed.Green fluorescent protein(GFP)with additional tran...