[B-cell subpopulation, rosetting with mouse erythrocytes, in patients with rheumatoid arthritis]

Inactive peripheral B-cells rosetting with mouse erythrocytes (BMR+), as well as the stimulation with anti-mu sepharose beads of peripheral mononuclear cells, are diminished in patients with active rheumatoid arthritis (RA). These data provide further evidence for a B-cell activation in active RA.