Differentiation between benign and malignant human lymph nodes by means of immunologic markers

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Abstract
A surface-marker assay combining immunofluorescence with anti-human immunoglobulin or anti-human brain serum (AHBS) and the formation of rosettes with untreated (E), antibody-sensitized (EA) and complement-coated (EAC) sheep erythrocytes was used to study mononuclear cell suspensions of human lymph nodes. The frequency of cells expressing more than one marker was increased in lymphoma nodes as compared to normal and hyperplastic nodes. The cells which simultaneously expressed complement receptors, surface immunoglobulin and the marker identified by AHBS represented the most prominent and characteristic subpopulation identified in neoplastic nodes. Distributions of cells with double and triple markers were studied by combining immunofluorescence with rosetting on frozen tissue sections. The multiple-marker cells had distributions that were characteristic in different human lymphomas. Benign and malignant human nodes could be distinguished on the basis of frequency and distribution of mononuclear cell populations carrying distinctive combinations of T- and B-cell surface markers.

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