Fig. 3

Co-culture microtissues of BMSC and C42B cells. Undifferentiated BMSC (red) and C42B cells (green) were co-cultured in the 3D microwell platform for 24 h and imaged using epifluorescence microscopy (scale bar = 200 μm) (a) and confocal microscopy (b). BMSC consistently localized to microtissue cores, while C42B cells consistently formed a shell around the BMSC cores