Fig. 4

Directly co-culture microtissues and GFP-SCs. GFP-SCs exhibited green fluorescence and PKH26-ASCs microtissues exhibited red fluorescence. Photographs in the bottom row are higher magnification views of those in the box in the up row. However, some GFP-SCs around the microtissues showed red fluorescence, there seems to be cytoplasmic exchange between microtissues and SCs (white arrow). Scale bars: 100 μm