Distribution of IM-9 cells with intergenic distances ≤2 μm during the cell cycle. (A) Comparison of distances PML-RAR with PML-βGLB. (B) Comparison of distances ABL-BCR with ABL-βGLB. (C) Comparison of distances PML-RAR with PML-PML and RAR-RAR. (D) Comparison of distances ABL-BCR with ABL-ABL and BCR-BCR. See text (Results) for statistically significant differences. The legends are as in Fig 2.