Co-localization of prestin and Fabp3 in OK cells. OK cells were transiently co-transfected with GFP-prestin and Xpres-tagged Fabp3. After 48 hrs, cells were fixed and incubated with mouse anti-Xpress followed by the corresponding secondary antibody. Yellow image (C) is superimposed from green prestin (A) and red Fabp3 (B) images, indicating the co-localization of prestin and Fabp3. For better visualization of the co-localization, the demarcated portion (indicated by arrowhead) of panel C is shown in the left corner of panel. Bar: 23.8 μm.