Fig. 5From: Growth of MCF-7 breast cancer cells and efficacy of anti-angiogenic agents in a hydroxyethyl chitosan/glycidyl methacrylate hydrogelSEM images of three kinds of HECS–GMA hydrogels. a–c The HECS–GMA20, HECS–GMA30 and HECS–GMA40, respectively (scale bar 250 μm). d–f The corresponding magnified pictures at a scale bar of 50 μmBack to article page