the functional relatedness of genes encoded within the e1 region was compared using a mutant complementation assay in which various group c mutants defective in the entire e1 region or in the e1a or e1b regions alone as well as mutants defective exclusively within the 19k or 58k t antigens coding regions of e1b were coinfected with wild type ( wt ) ad9 and tested for group c mutant dna replication , virus production , or expression of early and late genes .
C0003343
t
C0042776
virus