Fig. 1

The characterization of the gut microbiome and SCFAs-related alterations in MG patients and healthy controls (HCs). A The Simpson index and B Shannon index at the species level. C The top 15 abundant genera and D the top 15 abundant species in the gut for MG patients and HCs. E The functional changes of the gut microbiota for MG patients and HCs. F Differences of levels of fecal SCFAs in MG patients and controls. G Spearman’s correlation analysis for SCFAs and significant discordantly abundant species (Wilcoxon rank-sum test), species marked in blue were enriched in HCs, while marked in black were enriched in MG patients. The blue boxes indicate negative correlations, while the orange boxes indicate positive correlations. *P < 0.05, *P < 0.01