Fig. 4.

A four-layer circuit underlies pathogen avoidance behaviors. A Response index to P. aeruginosa for both naïve (gray) and trained (green) animals with either no neurons ablated (WT) or AUA (AY178) or RMG (AY179) neurons ablated. B Response index to E. faecalis for the same groups as in A. For both A and B, two-way ANOVA with subsequent comparison to naïve or trained WT groups was performed. Error bars depict standard deviation. N = 25 (individual dots) for all groups. C Occupancy index for P. aeruginosa after 24 h for animals with no neurons ablated (WT) or AUA or RMG neurons ablated. (D) Occupancy index for E. faecalis after 4 h for the same groups as in C. For both C and D, one-way ANOVA with subsequent comparison to the WT group was performed. Error bars depict standard deviation. N = 9 (individual dots) for all groups