The Silicon rubber (SR) tube, Polyester fiber (PETF) materials, Polyvinyl chloride (PVC) tube, and PVC tube coated with cellulose acetate (CA), Polyether suffone (PES), Polyurethane (PU) were contacted with circular serum at 37℃. Data before contact after contact for 5, 15, 60, 180min were measured respectively, the CH50 values in serum being assayed with the method of mayer a complement titre, and complement3 (C3) and complement4. (C4) being measured with biochemical analysis instrument (IL-Morarch761). T...
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