The mutants that are defective in daf-16, ced-3, or ced-9 and were also shown to be more susceptible to DT104 infection than the WT in the previous life-span assay without LB1 pretreatment (Figures 3B,C), however, the mutants exhibited a significantly increased life-span (P ≤ 0.05) after the pretreatment with LB1 (Figures 4D,F,G). The gene discussed is IFT43; the disease is infection.