pT173 antibody recognizes RUNX1, RUNX2, and RUNX3 during mitosis. (A) Immunoblot comparing RUNX1, RUNX2, and RUNX3 expression in COLO201, DLD1, and SNU5 cells. A total of 30 µg of total cell lysate was loaded per lane. (B) Immunofluorescence microscopy with pT173 antibody. Cells were imaged by confocal microscopy (Olympus FluoView FV1000). Red, pT173; green, γ-tubulin; blue, DNA. (C) Asynchronous DLD1 cells were stained as in B. Arrows indicate cells at different stages of mitosis. (Scale bars, 10 µm.)