Fig. 3From: Construction of in vitro 3-D model for lung cancer-cell metastasis studyConfocal microscopy images show the cell morphology of A549 and HPAEpiCs in one micro-chamber of the 3-D in vitro model. A549 lung cancer cells distributed in the micro-chambers in isolated mode, while normal lung epithelial cells HPAEpiCs can form tissue like assembly within the ECM chamberBack to article page