The spleen and thrombocytopenia.
D001792:Blood Platelets / Q000276:immunology; D006801:Humans; D007074:Immunoglobulin G / Q000276:immunology; D010587:Phagocytosis; D010976:Platelet Count; D011241:Prednisone / Q000627:therapeutic use; D011696:Purpura, Thrombocytopenic / Q000188:drug therapy / Q000276:immunology / Q000601:surgery; D013154:Spleen / Q000276:immunology* / Q000503:physiopathology; D013156:Splenectomy; D013921:Thrombocytopenia / Q000209:etiology* / Q000276:immunology
D007074:Immunoglobulin G; D011241:Prednisone