Following infection, TRAIL expression levels were significantly enhanced from 12 h p.i. (P<0.01), reaching a peak at 36 h p.i. (P<0.001) (Figure 5A, B), when we also detected a slight but significant increase (P<0.05) of FasL/Fas (Figure 6A, B, C). The gene discussed is TNFSF10; the disease is infection.