Colocalization of RUNX2 and PEBP2β. PEBP2β was coexpressed with either the wild-type RUNX2 (a and c) or T206I RUNX2 (b and d) in NIH3T3 cells, and the two subunits were visualized by double staining with anti-RUNX and anti-β antibodies, respectively. a, Wild-type RUNX2. b, T206I RUNX2. c, PEBP2β coexpressed with wild-type RUNX2. d, PEBP2β coexpressed with T206I RUNX2.