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Expression of GRA1/SAG1 antigen in mouse macrophage (immunocytochemistry, ×400). Upper left RAW264.7, upper right RAW264.7 transfected with pVAX1, lower left RAW264.7 transfected with pVAX1-SAG1, lower right RAW264.7 transfected with pVAX1-GRA1
