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PSP enhances the relative abundance probiotics in anxious students. (a) The relative abundance of the top 20 microbes. (b) The relative abundance of Fusobacterium, (c) Clostridium, (d) Prevotella, (e) Streptococcus, and (f) Akkermansia. H: students without test anxiety; BP: students before taking PSP; AP: students after taking PSP.
