A diverse array of innate immune cells, including mast cells (MC) (cluster 20: HDC, CPA3, KIT), dendritic cells (DC) (cluster 23: CLNK, WDFY4, FLT3), neutrophils (FCGR3B, FFAR2, CSF3R), and macrophages (CD68, CD163, C1QA/B/C), was also present in these granulomas. The gene discussed is FFAR2; the disease is Granuloma.