An En(a–) Red Cell Sample That Types as Wr(a–b–)

In the course of investigating a patient with autoimmune hemolytic anemia in which the causative autoantibody had anti‐Wrb specificity, it was demonstrated that an En(a–) red blood cell sample typed as Wr(a–b–). The only known example of Wr(a+b–) blood typed as En(a+) so that anti‐Wrb and anti‐Ena do not have the same specificity.