Figure 4From: SF2/ASF binding region within JC virus NCCR limits early gene transcription in glial cellsThe “CR3” region within JCV NCCR is critical for the expression of late genes. Cat enzyme activity of JCV-late promoter constructs were detected, and presented as bar graph. Schematic representation of JCV NCCR sequences cloned into CAT reporter constructs in late orientations was shown at the top of the graph.Back to article page