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Adsorption of albumin from 11 urine samples. The lines are second order polynomial fits to the data; the equation for material 16 (worst case) is y = 2.68 × 10−4 (x2) + 0.160 (x) + 2.38. Plot symbols are: material 3 (triangle), material 16 (diamond), sample cup material 20 (square), hydrophilic vial material 21 (circle) for the same materials described in Fig. 1.
