@article{article51f4aa28, title = {Cell adhesion and cytotoxicity studies over polyanionic collagen surfaces with variable negative charge and wettability}, author = {Bet, Marcos Roberto and Goissis, Gilberto and Vargas, S. and Selistre-de-Araujo, H. S.}, year = {2003}, doi = {10.1016/s0142-9612(02)00270-3}, journal = {Biomaterials} }