cotransfection of hela cells with plasmids containing the e1a regions of ad5 , ad40 , and ad41 , respectively , and the cat gene controlled by the ad2 e4 promoter showed that activation of the e4 promoter by the e1a regions of ad40 and ad41 depends on the same sequence elements of the e4 promoter as activation by the ad5 e1a gene products .
C1709313
e1a
C0101583
e1a gene