Fig. 3From: Engineering in-vitro stem cell-based vascularized bone models for drug screening and predictive toxicologya Cross-sectional bioreactor schematic. b Macroscopic and histological analysis of engineered osteochondral interface. c Live/dead staining of capillary-like network formed by HUVECs in bone compartment (GFP, green = HUVEC; Calcein Blue AM, blue = live cells; EthD-1, red = dead cells). gelMA gelatin methacrylate, PCL poly(ε-caprolactone), GFP green fluorescent protein, EthD-1 ethidium homodimer-1Back to article page