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On page 1568 in the 9 February 2012 issue, there is an error in the Figure 2 legend. The adjusted mean fluorescence intensity (MFI) for the groups initially transfused with hGPA or FVB RBCs was transposed, along with associated P values. The fourth and fifth sentences of the legend read, “Adjusted mean fluorescence intensity (MFI) was 119 after poly(I:C) hGPA transfusion in the group initially not transfused, 103 in the group initially transfused with hGPA RBCs, and 1 in the group initially transfused with FVB RBCs. P < .0001 between the group initially not transfused and the hGPA group; P = .6 between the hGPA and FVB transfused groups.” The sentences should have read, “Adjusted mean fluorescence intensity (MFI) was 119 after poly(I:C) hGPA transfusion in the group initially not transfused, 1 in the group initially transfused with hGPA RBCs, and 103 in the group initially transfused with FVB RBCs. P < .0001 between the group initially not transfused and the hGPA group; P =.6 between the group initially not transfused and the FVB transfused group.”