FIG. 2.

Representative histology images of modules in vitro immediately after fabrication. The samples were serially cut; the same modules are seen with the different histology stains. All the EC (UEA-1⁺, CD31⁺) appeared to express eGFP (GFP⁺). Good EC coverage of the modules was observed for both Del-1 and eGFP samples. Scale bar is 100 μm for lower magnification images and 50 μm for higher magnification (black squares indicate areas that are shown in higher magnification images). Each oval structure in the high-magnification images is one module. Del-1, developmental endothelial locus-1; EC, endothelial cells. Color images available online at www.liebertpub.com/tea