Figure 2

Heatmap visualization of the ratios of the transcripts of the us1-KO and the wt viruses (R _r  = R _us1KO /R _wt ). The red color (R_r < 1) indicates a transcript level that is lower in the mutant than in the wt virus at a certain period of infection, whereas the black (R_r > 1) indicates the opposite: the mutant virus produces a higher amount of mRNA than the wt virus.