Fig. 4. Probiotics restored RSV-induced lung microbiota alteration.

a Lung microbial Shannon diversity analysis was performed (n=4). b Principal coordinate analysis of the lung microbiota of mice was conducted (n=4). c, d The relative abundance of the dominant lung microbiota (>1% in any sample) at the phylum level was measured (n=4 or 5). e–h The relative abundance of the dominant bacteria at the genus level was examined (n=4 or 5). i–k The relative abundance of the dominant bacteria at the species level was examined (n=4 or 5). (l) Representation of the Firmicutes/Bacteroidetes ratios at the phylum level (n=4). All results are expressed as the mean±SD (a–l). *P<0.05, **P<0.01, ***P<0.001 by Student’s t test.