“…To quantify the protein adsorbed on the MAC and SBAE surfaces, the samples were incubated in the presence of fetal bovine serum (FBS) (2% in phosphate buffered saline (PBS)) at 37 • C for 30 min, and then they were washed twice with PBS. As described elsewhere [46], the total protein amount was first eluted from the samples with Tris Triton buffer (10 mM Tris (pH 7.4), 100 mM NaCl, 1 mM EDTA, 1 mM EG-TA, 1% Triton X-100, 10% glycerol and 0.1% SDS) for 10 min, then quantified using a Pierce™ BCA Protein Assay Kit (Life Technologies, Carlsbad, CA, USA) according to the manufacturer's instructions using the spectrophotometer "Jenway 6300" (Jenway, London, UK).…”