Production and characterization of monoclonal antibodies to rabbit lymphocyte subpopulations. I. Tissue immunofluorescence and flow cytometric analysis.

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Abstract
Nine monoclonal antibodies to rabbit T cells and B subpopulations have been generated from three separate fusions of spleen cells from mice immunized with fractionated populations of rabbit lymphocytes. These monoclonal antibodies, as well as a previously described rabbit T cell monoclonal antibody, 9AE10, have been analyzed by immunofluorescence staining on frozen tissue sections of rabbit thymus, spleen, and appendix. This screening method permits rapid identification of the lymphocyte subdomains in each tissue which is not possible by other screening methods. Each monoclonal antibody selected has a unique tissue staining pattern. Flow cytometric analysis of these monoclonal antibodies, using indirect immunofluorescence techniques on thymocytes, splenocytes, and PBL, revealed varying percentages of positive cells and individual mean fluorescence intensities indicating different epitope densities for each antigen. These monoclonal antibodies are now being used to characterize normal lymphocyte function and the role of specific lymphocyte subpopulations in experimental disease models in the rabbit.