Fig. 4

Promoter activities of HPyV9 reference sequence and UF-1 isolate in different cells. Panel a shows the luciferase values of all four promoters in different cells. Luciferase values are shown separately for the HPyV9 early (panel b) and late promoters (panel c), and for the UF-1 isolate early (panel d) and late promoters (panel e). Each bar represents the mean of nine measurements with SDs from three independent experiments. 9_E: HPyV9 reference genome early promoter; 9_L: HPyV9 reference genome late promoter; UF-1_E: HPyV9 UF-1 isolate early promoter; UF-1_L: HPyV9 UF-1 isolate late promoter. A statistically significant difference is indicated by a red line with P value (Kruskal-Wallis, Dunn’s multiple comparisons test).