Levels of IL-2Rα in transgenic and control mice lacking or harboring B-cell lymphomas. The expression level of IL-2Rα in splenocytes and PBLs from CD19Cre and RzCD19Cre mice and in B-cell lymphomas from RzCD19Cre mice was measured by ELISA. IL-2Rα levels per total protein are indicated (picograms per milligram). Data from quadruplicate samples are shown as the mean ± SD (*P < .05).