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Alpha diversity of HC and MDD samples.
Notes: (A–D) The ACE, Chao1, Shannon, and Faith’s phylogenetic diversity of HC and MDD calculated using rarefied OTU matrix. All four diversity indices in HC are significantly higher than MDD. *P<0.05, **P<0.01, ***P<0.001.
Abbreviations: HC, healthly control; MDD, major depressive disorder; OTU, operational taxonomic unit.
