Fig. 5. Probiotics may potentially activate the antiviral responses of alveolar macrophages.

a PICRUSt analysis combined with the Kyoto Encyclopedia of Genes and Genomes (KEGG) database of microbial genomic information. b, c The relative abundance of Corynebacterium at the genus and species levels was examined (n=4 or 5). d–f The relative abundance of Lactobacillus at the genus and species levels was examined (n=4 or 5). All results are expressed as the mean±SD (b–f). *P<0.05, ***P<0.001 by Student’s t test.