Fig. 6

Gut microbial diversity and enterotypes in patients with different respiratory diseases. A The Shannon index of the airway diseases group, lung infections group, respiratory failure group, and NSCLC group were significantly lower than that of the healthy control. B Remarkably distinct microbiota compositions were observed among the different respiratory diseases and the healthy group. C Distribution of samples across different enterotypes. D Distribution of enterotypes among the different respiratory diseases and the healthy group. Each dot corresponds to a sample. **P < 0.01 and ***P < 0.001