FCGR2A and anemia (phenotype): Finally, LDV-infected FcγR KO mice were completely resistant to 34-3C-induced hemolytic anemia (Figure 2A, p < 0.0001), whereas the depletion of the complement protein C3 through the administration of cobra venom factor (CVF) did not decrease the development of anemia in LDV-infected 34-3C-treated WT mice (Figure S1).