Additional file 2: Figure S2. of Recapitulating epithelial tumor microenvironment in vitro using three dimensional tri-culture of human epithelial, endothelial, and mesenchymal cells

Immunohistochemical staining against cytokeratin 18 in A549, human pulmonary microvascular endothelial cells (HPMEC), mesenchymal stem cells (MSCs) and 2-D Triculture (Scale bar: 100 μm for low magnification and 50 μm for high magnification images). (DOCX 1749 kb