Highlights d T-bet + B cells are a separate and durable memory subset in mice and humans d T-bet hi memory B cells are absent from the lymphatic circulation d Influenza-specific T-bet hi memory B cells are spleen-resident in mice d B cell-intrinsic T-bet is required for >90% of flu-and HA stalkspecific antibodies

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The first in vivo evaluation of ECR demonstrated that this technology has objectively reduced KAP and operator irradiation by approximately 75% without interfering with the performance of fluoroscopically guided interventional procedures. In addition, reduced scatter production subjectively improved device visualization. These findings indicate the practicability of achieving better radiation optimization.