@misc{indiciaed007f36090d2, title = {Interaction of cells on chargeable functional group gradient surfaces.}, author = {J H Lee and J W Lee and G Khang and H B Lee}, year = {1997}, doi = {10.1016/s0142-9612(96)00128-7}, url = {https://pubmed.ncbi.nlm.nih.gov/9068898/}, note = {Source identifier: 9068898} }