The lung-joint axis in RA just keeps on getting stronger Lung ACPA present in early untreated RA/CSA: crossreact acetylated/carbamylated antigens differ in effects on cell types (neut activation, fibroblasts, osteoclasts) Isn't lung ACPA fascinating? #ACR20 ABST1445 @RheumNow https://t.co/9VKSRYlndT