Fig. 4

Differences in richness and diversity among groups. a, b Ace index results; c, d the Chao index results. e The variation analysis of PCoA among bacterial communities of all specimens, where each point represents an independent sample. C represents the control group; P represents the pyrotinib model group; S represents SBP group; SP represents the pyrotinib + SBP treatment group (The abbreviations for the following groups are the same)