TNFSF11 and infection: In M cell +ve (RANKL stimulated) enteroids, infection with Salmonella led to a further increase in expression of Gp2 (at one hour post-infection), SpiB and Ccl20 (at both 1 and 24 hours post-infection), compared to the uninfected RANKL stimulated enteroids (Figure 3, compare triangles with inverted triangles in plots).