(E) Survival of Rag2-/-Ggta1+/+ (n = 5) mice after infection with a cecal inoculum from Ggta1+/+ mice, and Rag2-/- Ggta1+/+ (n = 5) mice after infection with a cecal inoculum from Rag2-/-Ggta1+/+ mice; one experiment. Here, GGTA1 is linked to infection.