Heatmap-like representation of the ratio of transcripts produced in the low-MOI and high MOI infection (R
t low MOI/
t high MOI
). PK-15 cells were infected with the PRV-Ka strain at different MOIs (0.1 and 10). Real-Time PCR data were normalised to 28 S RNAs. The Rlow/Rhigh values are plotted in a heat map-like manner. Black boxes indicate the highest ratio, and dark-red boxes the lowest values. White boxes demonstrate approximately equal values.