Northern blot of pI2E- versus pDI2E-transfected K562.

Each lane contains 10 μg total RNA from untransfected K562 cells (lane 1), cells transfected with the pI2E vector (lane 2), and cells transfected with the pDI2E vector (lane 3). The ³²P-labeled probes were used for hybridizations. (A) Membrane hybridized with a DOK1 probe. (B) Membrane hybridized with an EGFP probe. (C) Membrane hybridized with a β-actin probe.