Notch and TGFβ Signaling in Refractory Rheumatoid Arthritis Spatial transcriptomic profiling of rheumatoid arthritis (RA) synovial biopsies (pre- and post-treatment) has revealed new insights into the pathobiology or treatment resistent RA. https://t.co/vCvFpnIOvS https://t.co/EV6OihT0br