Table 2: Protein adsorption (mg/m2) as measured by ellipsometry.

Surface Silika 0.35 1.10 2.9 1.90 3.10 1.90 PEI/PEG1500 — 0.05 0.05 — — — PEI/PEG6000 0.05 0.05 0.05 0.05 .05 0.05 PEI/PEG12500 — 0.05 0.05 — — —

HAS: human serum albumin; IgG: immunogammaglobulin; Fgn: fibrinogen; Fn: fibronectin; C3: complement component; C1q: complement component.