Single‐cell RNA Sequencing Identified Novel Nr4a1+ Ear2+ Anti‐Inflammatory Macrophage Phenotype under Myeloid‐TLR4 Dependent Regulation in Anti‐Glomerular Basement Membrane (GBM) Crescentic Glomerulonephritis (cGN). The gene discussed is NR4A1; the disease is crescentic glomerulonephritis.