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. 2007 Oct 31;82(2):871–879. doi: 10.1128/JVI.01626-07

FIG. 1.

FIG. 1.

Tumor induction in hamsters by parental and recombinant SV40 viruses. (A) Influence of the viral regulatory region. Black bars indicate viruses with simple regulatory regions (1E); shaded bars indicate viruses with complex regulatory regions (2E). The difference between the two groups (1E versus 2E) was statistically significant (66/152 [43%] versus 18/155 [12%]; P = 0.0001). (B) Influence of the T-ag variable domain. Sequences unique to a given strain are indicated by markings shown in the figure.