Immunoprofiling of synovial CD4+ T cell subsets shows that ACPA+ pts differ from ACPA- RA by having high expression of adhesion G-protein coupled receptor 56 (GPR56) on synovial CXCL13high TPH CD4+ T cells expressing LAG-3 https://t.co/LQ77CIdh9o https://t.co/chfmLfIqeF