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1 Department of Pediatrics and Clinical Microbiology, Rothschild Hadassah
University Hospital and Hebrew University Hadassah Medical School, Jerusalem, and
the Polymer Department, Weizmann Institute of Science, Rehovot, Israel.
A case of chronic idiopathic pancytopenia in a young girl is presented, in which
the pancytopenia was shown to be due to increased destructions of all 3 blood cell
types. Antileukocyte and antiplatelet antibodies were demonstrated by transfusion methods as well as by in vitro agglutination, while differential agglutination provided evidence of a plasma factor causing increased red cell destruction. Cross absorption experiments demonstrated the presence in the patients
serum of at least 2 separate and distinct antibodies, specific for leukocytes and
platelets respectively. Observations on the phagocytic behavior of leukocytes and on the electrophoretic mobility of leukocytes and platelets exposed to the patients serum are
reported.
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