Abstract 
Expression of the human ADA cDNA encoded by the Moloney murine leukemia 
virus (M-MuLV) spliced RNA form is enhanced by intron-contained sequences. 
Presence of sequences corresponding to the viral gag gene in an M-MuLV based 
vector results in the generation of 10-40 fold higher titers of virus. 
Recombinant DNA Research, Volume 12 
[251] 
