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(A) RBCs can be used to clear immune complexes by way of the interaction between complement protein C3b and CR1. (B) Bispecific antibodies to CR1 and pathogens can be used to capture pathogens via the RBC surface. (C) Antibody/drug fusions targeted to CR1 can be used to attach therapeutic moieties directly to the RBC surface.
RES: Reticuloendothelial system.
