Abnormal Mitoses in the Absence of Myb
Imaginal disc cells from Myb mutant larvae were stained with propidium iodide for DNA (blue), anti-beta-tubulin (green), and anti-phosphohistone H3 for condensed chromatin (red). Note the mass of condensed DNA that is unattached to the spindle (left) as well as a nucleus with a multipolar spindle (right).
Manak, J., Mitiku, N., and J.S. Lipsick. "Mutation of the Drosophila homologue of the Myb protooncogene causes genomic instability." Proc. Natl. Acad. Sci. USA 99: 7438-7443 (2002). [pdf]