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B-Cell Lymphosarcoma Cell Leukemia: Dynamics of Surface-Membrane Immunoglobulin: Value for Differentiation from Chronic Lymphocytic Leukemia

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Grant support: by the General Medical Research Division of the Veterans Administration and in part by Grants CA 05634 and CA 11265 from the National Cancer Institute, National Institutes of Health, Department of Health, Education, and Welfare.

▸Requests for reprints should be addressed to Harvey Jay Cohen, M.D.; Chief, Medical Service, Veterans Administration Hospital; 508 Fulton Street; Durham, NC 27705.

Durham, North Carolina

© 1978 American College of PhysiciansAmerican College of Physicians

Ann Intern Med. 1978;88(3):317-322. doi:10.7326/0003-4819-88-3-317
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Circulating abnormal lymphoid cells in patients with lymphosarcoma cell leukemia show intense fluorescence when stained with fluoroscein-labeled anti-immunoglobulin. The fluorescence is brighter than normal B cells in contrast with chronic lymphocytic leukemia cells, which have much weaker fluorescence than normal. Also in striking contrast with chronic lymphocytic leukemia cells, lymphosarcoma cell leukemia cells redistribute the surface immunoglobulin rapidly during incubation at 37 °C to form bright caps. In this respect they more closely resemble normal B cells than chronic lymphocytic leukemia cells. In addition, in sequential studies, the appearance of these characteristics among the circulating cells of patients with lymphoma has been shown at a time when the appearance of a leukemic phase was equivocal morphologically. Thus these cellular characteristics may be helpful in the early diagnosis of a leukemic phase of lymphoma as well as distinguishing these cells from those in chronic lymphocytic leukemia.





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