Effect of gating strategy on Vβ analysis. A, Initial lymphocyte gate (blue) was established based on FSC and SSC properties. Subsequently, 2 gating strategies were used. B, Gating strategy 1 gates all CD3+/CD4+ cells (red) to examine the Vβ distribution. C, Vβ17 expression is noted in 18.25% of CD3+/CD4+ cells. D, Gating strategy 2 gates specifically on neoplastic cells of interest, by gating on dim CD3+ and CD4+ cells (red). E, Vβ17 expression is noted in 72.48% of dim CD3+ and CD4+ cells. APC, allophycocyanin; FITC, fluorescein isothiocyanate; FSC, forward light scatter; PE, phycoerythrin; PerCP, peridinin chlorophyll-a protein; SSC, side light scatter.