(a,b) Multiple MBds associate with a PC3 cell (a) and a B-lymphoblast (b). Insets: MBd labelling (a) and merged differential interference contrast microscopy image with MBd labelling to show cell boundaries (b). MKLP1, MBd marker (a,b; red); CD44, membrane (a; green); DAPI, DNA (a; blue). Scale bar, 5 μm (a) and 2 μm (b). 