here we demonstrate that this segment from the 202 gene has characteristics of an interferon-activatable enhancer : ( a ) it can activate a heterologous promoter ( sv40 early promoter ) , ( b ) it is active in both the appropriate and the inverted orientation and in either upstream or downstream locations from the promoter activated , and ( c ) treatment of cells with interferon increases its activity severalfold .
C0086222
enhancer
C0007634
cells