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Vascularization of human islet microtissues. Maximum projection of a stack of confocal images of a human islet microtissue engrafted on the iris of a NSG mouse 8 weeks after transplantation. (a) Reflection image; (b) TRITC-dextran fluorescence; (c) Overlay of reflection and fluorescent images; (a–c) Scale bar is 200 µm.
