Beer, M V*; Hahn, K*; Diederichs, S*; Fabry, M*; Singh, S*; Spencer, S J; Salber, J*; Moller, M*; Shard, A G; Groll, J* (2015) Quantifying ligand-cell interactions and determination of the surface concentrations of ligands on hydrogel films: the measurement challenge. Biointerphases, 10 (2). 021007