Fig. 3From: A possible injectable tissue engineered nucleus pulposus constructed with platelet-rich plasma and ADSCs in vitroSafranin O staining. There was almost no positive pink dyeing extracellular matrix at 2nd week, × 200 (a). Pink dyeing was weakly positive in extracellular matrix at 4th week, × 200 (b). Positive pink dyeing was enhanced obviously in extracellular matrix at 8 weeks, × 200 (c)Back to article page