title: Characterisation and separation of human lymphocytes forming mouse red cell rosettes.
abstract: Rosette formation between human lymphocytes and mouse red blood cells (MRBC) was examined as a marker for B lymphocytes and as a method of B lymphocyte separation. A small proportion of lymphocytes formed spontaneous rosettes with MRBC (mean value 6%) and the number was considerably increased by pretreating the lymphocytes with neuraminidase (mean value 16%). Double marker tests demonstrated that lymphocytes forming MRBC rosette were immunoglobulin (Ig) bearing cells, with a high proportion of IgM bearing cells, but not all Ig bearing cells formed MRBC rosettes. Lymphocyte populations enriched with T or B lymphocytes, by SRBC rosette sedimentation and nylon column filtration, gave values for MRBC rosettes consistent with a subpopulation of Ig bearing cells. Separation of MRBC rosette-forming cells gave a relatively poor degree of separation and rerosetting with MRBC produced variable results.
mesh_terms: D000818:Animals; D001402:B-Lymphocytes / Q000276:immunology; D002469:Cell Separation; D002499:Centrifugation, Density Gradient; D004912:Erythrocytes / Q000276:immunology*; D005455:Fluorescent Antibody Technique; D006801:Humans; D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D008214:Lymphocytes / Q000276:immunology*; D051379:Mice; D011947:Receptors, Antigen, B-Cell; D012397:Rosette Formation; D013601:T-Lymphocytes / Q000276:immunology
chemical_list: D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M; D011947:Receptors, Antigen, B-Cell