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Figure 4 The vWF levels in 26 patients with embolic events according to normal and elevated anticardiolipin-antibody titers. A majority of values in both patient groups exceed the normal range of vWF. This is not surprising as vWF is an acute-phase reactant. Nevertheless, 1/18 (6%) and 4/8 (50%) of patients with normal and elevated ACA titers have vWF levels >200%, respectively. (Upper range of normal values = 150%.)
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