Concentration of Fetal Red Blood Cells From a Mixture of Maternal and Fetal Blood by Anti-i Serum—An Aid to Prenatal Diagnosis of Hemoglobinopathies

1Division of Hematology of the Department of Medicine, Children’s Hospital Medical Center, the Department of Pediatrics, Harvard Medical School, Boston, Mass. 02115, the Hematology Service and the Clinical Laboratories, San Francisco General Hospital, San Francisco, Calif. 94110, and the Departments of Medicine and Clinical Pathology and Laboratory Medicine, University of California, San Francisco, Calif. 94122 and the Department of Pathology, University of Toronto, Toronto, Canada.

2Hematology Service, San Francisco General Hospital; Associate Professor of Medicine and Clinical Pathology and Laboratory Medicine, University of California. San Francisco, Calif

1Division of Hematology of the Department of Medicine, Children’s Hospital Medical Center, the Department of Pediatrics, Harvard Medical School, Boston, Mass. 02115, the Hematology Service and the Clinical Laboratories, San Francisco General Hospital, San Francisco, Calif. 94110, and the Departments of Medicine and Clinical Pathology and Laboratory Medicine, University of California, San Francisco, Calif. 94122 and the Department of Pathology, University of Toronto, Toronto, Canada.

3Division of Hematology. Children's Hospital Medical Center; Associate Professor of Pediatrics, Harvard Medical School, Boston, Mass.

1Division of Hematology of the Department of Medicine, Children’s Hospital Medical Center, the Department of Pediatrics, Harvard Medical School, Boston, Mass. 02115, the Hematology Service and the Clinical Laboratories, San Francisco General Hospital, San Francisco, Calif. 94110, and the Departments of Medicine and Clinical Pathology and Laboratory Medicine, University of California, San Francisco, Calif. 94122 and the Department of Pathology, University of Toronto, Toronto, Canada.

4Children's Hospital Medical Center and Harvard Medical School, Boston, Mass.; recipient of an International Postdoctoral Research Fellowship (1 F05 TW-1 781-02) from the USPHS; on temporary leave from the Department of Pediatrics, Hadassah University Hospital. Jerusalem, Israel.

1Division of Hematology of the Department of Medicine, Children’s Hospital Medical Center, the Department of Pediatrics, Harvard Medical School, Boston, Mass. 02115, the Hematology Service and the Clinical Laboratories, San Francisco General Hospital, San Francisco, Calif. 94110, and the Departments of Medicine and Clinical Pathology and Laboratory Medicine, University of California, San Francisco, Calif. 94122 and the Department of Pathology, University of Toronto, Toronto, Canada.

5University of Toronto. Canada.