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Primary warm autoimmune hemolytic anemia (wAIHA) is a rare autoimmune disease in which red blood cells are eliminated by IgG autoantibodies. We analyzed the antibody-secreting cells in the spleen and the peripheral blood of wAIHA patients in various contexts of treatment. Plasmablasts were observed in peripheral blood of newly diagnosed wAIHA patients and,(More)
Alloimmunization against red blood cells (RBCs) is the main immunological risk associated with transfusion in patients with sickle cell disease (SCD). However, about 50-70% of SCD patients never get immunized despite frequent transfusion. In murine models, CD4(+) T cells play a key role in RBC alloimmunization. We therefore explored and compared the CD4(+)(More)
Alloimmunization against RBCs can cause life-threatening delayed hemolytic transfusion reactions. Anti-CD20 Ab has recently been used to prevent alloimmunization. However, its effects remain unclear, particularly in lymphoid organs. We investigated the impact of murine anti-CD20 Ab in the blood and spleen. We assessed protocols for preventing primary(More)
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