title: Antigen bridging in the interaction of T helper cells and B cells.
mesh_terms: D000941:Antigens / Q000276:immunology*; D001402:B-Lymphocytes / Q000276:immunology*; D003432:Cross-Linking Reagents; D008211:Lymphocyte Cooperation; D011946:Receptors, Antigen / Q000276:immunology; D013329:Structure-Activity Relationship; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D000941:Antigens; D003432:Cross-Linking Reagents; D011946:Receptors, Antigen