Fig 3. Resistance of silkworms orally administered heat-killed fungi against fungal infection.

Silkworms were fed a normal diet (n = 20) or a diet containing heat-killed C. albicans cells (n = 20) for 2 d, and then injected with C. albicans. Results from two independent trials (S1 Table, exp. 7–8) were combined into a single analysis. The combined survival curve is shown in the figure. Survival of silkworms fed the diet containing heat-killed C. albicans cells was comparable to that of silkworms fed the normal diet (p = 0.995). None of the mock-infected silkworms died (S1 Fig).