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Ammonium (A) and short-chain fatty acid (B) concentrations in the ascending colon in microbiota of individuals with mild anxiety using the SHIME® model over the course of the 7 or 14 days of treatment with L. helveticus R0052 and B. longum R0175. Asterisks (**) represent significant differences relative to control according to the paired t-test (** p < 0.01).
