US guided lymph node Bx compared 25 controls, 14 ACPA (+) & 45 ACPA (-) RA pts. ACPA+ LN Bx showed upregulated adaptive imm. genes, but ACPA neg LN Bx showed higher innate imm genes - especially w/ higher neutrophil presence & incr CD15 + PMNs irrespective of ACPA status https://t.co/C42QMd2zap