Fig. 6

Comparison of plasma microbiome diversity at genus and species levels in patients with and without ACR. a Simpson’s diversity index at the genus level, b Simpson’s diversity index at the species level, c Shannon’s diversity index at the genus level, and d Shannon’s diversity index at the species level are depicted. Simpson’s diversity indices in the ACR group were significantly higher than those in the NR group (genus level: 0.89 ± 0.04 vs. 0.84 ± 0.10, respectively, p = 0.03; species level: 0.93 ± 0.04 vs. 0.85 ± 0.13, respectively, p = 0.004). ACR, acute cellular rejection; NR, no rejection