Immunofluorescence detection of Corto and DSP1 on polytene chromosomes. (A-C) Simultaneous detection of Corto (green) and DSP1 (red) on Oregon-R polytene chromosomes stained with DAPI (blue). (D, E) Magnification of chromosome 2L end of Oregon-R (D) or dsp1
1 (E) labeled with anti-Corto (green) and anti-DSP1 (red). Sites shared by DSP1 and Corto in Oregon-R are yellow.