Immunohistological analysis of Hodgkin's and Sternberg-Reed cells: Detection of a new antigen and evidence for selective IgG uptake in the absence of B cell, T cell and histiocytic markers

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Abstract
To help clarify the origin and nature of Hodgkin's (H) and Sternberg-Reed (SR) cells, three different sets of experiments were performed. First, it was shown that cytoplasmic γ, ϰ, and λ occur not only in H and SR cells, but also in polymorphic tumor cells of epithelial, neurogenic, and lymphoid origin. Furthermore, human IgG that was injected i.v. into rats penetrated many rat liver cells, whereas injected human α1-antitrypsin did not. Second, staining of frozen section revealed that H and SR cells lack surface immunoglobulin and peripheral T-cell antigen. Third, an antiserum raised against the L 428 cell line (derived from Hodgkin's disease) and absorbed with human serum and normal cells did not react with any cells of tonsil tissue (lymphoid cells, histiocytes, and interdigitating reticulum cells), whereas it reacted strongly with the L 428 cell line cells and with H and SR cells of 10 different cases. In all ten cases, the antiserum stained the surface of H and SR cells; in two cases, it also stained the nucleoli and some chromatin spots in H and SR cells. The results obtained in these experiments indicate that H and SR cells are not closely related to lymphoid cells, histiocytes, or interdigitating reticulum cells. The findings also suggest that H and SR cells express one or more antigens that have not yet been detected on or in normal cells.