Figure 12

Recovery of infectious recombinant RSV long virus entirely from cloned cDNAs. The five cDNAs are indicated by rectangles and encode a positive-sense copy of the viral genome (antigenome) of rLong or rLong-∆G-EGFP and mRNAs for the N, P, L, and M2-1 proteins of the nucleocapsid/polymerase complex. The expression of the cDNAs is under the control of T7 promoter, The indicated ribozyme encoded at the downstream end of the antigenome executes self-cleavage to produce a correct 3’end. The T7 RNA polymerase can be provided intracellularly by vTF7-3 vaccinia virus.