Fig. 4
Enriched pathways associated with subchronic and chronic exposures to GAS and PM1. a The enriched pathways associated with subchronic (3-month, the two left columns), chronic (6-month, the two middle columns) to GAS and PM1 as well as progressive exposure to GAS, PM1 and CTL (the three right columns). b The enriched pathways specifically regulated by fine particles. Pathway enrichment analysis was performed using IPA. The size of the circle represents the p value for enrichment analysis. The colour of the circle indicates activation z-scores (red for upregulation and blue for downregulation)