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Lack of TCR Vβ bias in PBL of Lyme arthritis patients before or after Borrelia stimulation. PBL from a normal individual (A) and a Lyme arthritis patient (B), either freshly isolated (PBL 0′; black bars) or after stimulation with B. burgdorferi for 7 days (PBL+Bb; hatched bars), were analyzed for Vβ gene frequency. No consistent differences in Vβ usage in PBL from two normal individuals or two Lyme arthritis patients were observed.
