from the article - "The microbiota-deficient mice were unable to update their response, and showed persistent fearful behaviour long after control animals had a

from the article - "The microbiota-deficient mice were unable to update their response, and showed persistent fearful behaviour long after control animals had adapted. Chu et al. found the same phenomenon in mice that had been raised germ-free in sterile isolators and so had never developed a gut microbiota." Seems conclusive enough though I wished they gave further details about the microbiota and whether something like fecal transplants were effective. The supporting DOI document is 404 at the moment. (personal note - although animal research troubles me ethically I accept that there are few alternatives to it currently, although Cerebral Organoid research is proving interesting. Link if interested https://www2.mrc-lmb.cam.ac.uk/group-leaders/h-to-m/madeline-lancaster/ https://www2.mrc-lmb.cam.ac.uk/group-leaders/h-to-m/madeline...).