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Unchanged cell morphology and viability with incubation of COP raw material eluates. Brightfield images are shown of human umbilical vein endothelial cells (HUVEC) incubated with or without pelleted COP material for 24 hours. Viable HUVEC were labeled with CalceinAM (LIVE, green), dead cells were labeled with EthD‐1 (DEAD, red). Scale bar represents 100 μm.
