Fig. 12From: Growth of MCF-7 breast cancer cells and efficacy of anti-angiogenic agents in a hydroxyethyl chitosan/glycidyl methacrylate hydrogelMicroscopically, the expression of CD34, VEGF-A, PDGF-B and bFGF of the xenografts formed by MCF-7 cells pre-cultured in 2D and 3D systems. Reddish-brown precipitate indicates positive staining. Original magnification ×400Back to article page