At day 4 post-inoculation, there was a 20-fold increase in response to WT (above controls) and by day 7 post-inoculation, LIX was expressed 80-fold higher than controls, and at each of these time points LIX gene expression was significantly higher (4-6-fold) in response to WT than to ΔPT infection (Fig. 2C). This evidence concerns the gene DCX and infection.