Distribution of bone marrow cells with intergenic distances ≤2 μm during interphase. (A) CD34⁺ cells. Distances PML-RAR versus PML-PML and PML-RAR versus RAR-RAR. (B) CD34⁺ cells. Distances ABL-BCR versus ABL-ABL and ABL-BCR versus BCR-BCR. (C) CD34⁺ cells stimulated with IL-3. Distances PML-RAR versus PML-PML and PML-RAR versus RAR-RAR. (D) CD34⁺ cells stimulated with IL-3. Distances ABL-BCR versus ABL-ABL and ABL-BCR versus BCR-BCR. See text (Results) for statistically significant differences. The legends are as in Fig 2.