Figure 2. Altering the gut microbiome can trigger behavioral changes.

Gacias et al. transplanted the gut microbiome (via fecal transplants) from oral-control NOD mice into B6 mice. The B6 mice had first had their own gut microbiome depleted with antibiotics, and the recipient mice showed similar changes in behavior as the donors. As before, the blue dot indicates the location of the medial prefrontal cortex in the brain.