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. Author manuscript; available in PMC: 2018 Jan 30.
Published in final edited form as: Virology. 2013 May 29;443(1):11–19. doi: 10.1016/j.virol.2013.04.033

Figure 3.

Figure 3

E7 alone can activate the late promoter. Uninfected HFK cells (a) or HPV16-containing keratinocytes (a-c) were cotransfected with luciferase reporters for the HPV16 (a, b) or HPV31 (c) late promoters along with the indicated E7 expression vectors. Following culture in monolayer or MC for 24 hours, luciferase activities were measured and normalized as described in Figure 1. V, pcDNA empty vector. Values represent the means of 3-17 independent experiments and bars represent ± one standard error of the mean.