title: Clonal expansion of IgM B memory cells in vitro.
mesh_terms: D000818:Animals; D001402:B-Lymphocytes / Q000276:immunology*; D002454:Cell Differentiation; D002999:Clone Cells / Q000166:cytology / Q000276:immunology; D006462:Hemolytic Plaque Technique; D007075:Immunoglobulin M; D007156:Immunologic Memory; D051379:Mice; D008808:Mice, Inbred CBA; D013601:T-Lymphocytes / Q000276:immunology
chemical_list: D007075:Immunoglobulin M