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Cell viability in atmospheric CO2. Tubule (consisting of human PTECs) and vessel (consisting of HUVECs) in VPT-MPS maintain cell viability for up to 8 h when exposed to atmospheric CO2 during time-lapse functional imaging studies; some cell death and gaps in cell coverage is observed in vessel. Shown are images from n = 2 VPT-MPS devices constructed from single cell donor. Scale bar: 100 μm
