Fig. 7. Role of β1 integrins in ECM retention of mRFPoTSP1C. (A,B) Quantification of relative expression (A) or ECM retention (B) of mRFPo or mRFPovTSP1C by GD25 and GD25β1A cells. Each column represents the mean of three experiments; bars represent s.e.m. Insets in B show representative confocal images of mRFPoTSP1C puncta in the ECMs of GD25 and GD25β1A cells. (C) Partial codistribution of fibronectin and mRFPovTSP1C in the ECM of GD25β1A cells. Top row, arrows indicate absence of colocalised fibronectin. Middle and bottom rows, arrows indicate areas of colocalisation. Scale bars: 10 µm.