IHC staining and quantitative analysis results presented a higher percentage of COL1A1-, IL-1β-, TNF-α-, CCL3-, and F4/80-positive cells and a lower percentage of COL2A1- and ACAN-positive cells in AF mice than in AF plus DAP mice (Fig. S7h–k). This evidence concerns the gene COL1A1 and atrial fibrillation.