Fig. 4From: Paper-based in vitro tissue chip for delivering programmed mechanical stimuli of local compression and shear flowAverage numbers of RVECs in FOV and average lengths of RVEC migration on the paper chips with a mechanical stimuli, b mechanical and chemical stimuli (VEGF), and c mechanical stimuli and tumor induction, where one peripheral channel was replaced with MCF7 (breast cancer cells). Averages of 3 experiments, each from 6 different images of a different paper chip. Error bars represent standard errors. * represents statistical difference with p < 0.05Back to article page