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. 1999 May;116(2):220–224. doi: 10.1046/j.1365-2249.1999.00874.x

Fig. 1.

Fig. 1

In vivo acute activation of the classical complement pathway resulted in parallel decreases of concentrations of C4, C4BP and C4BP–S complexes and in rapid clearance from the circulation of C4BP–C4b complexes. Arrow, Infusion of von Willebrand factor (vWF) concentrate; %, percentage of contents of normal pooled plasma; AU, arbitrary units.