title: The antigen specificity of thymus-derived helper cells.
mesh_terms: D000818:Animals; D000918:Antibody Specificity; D000921:Antibody-Producing Cells; D000937:Antigen-Antibody Reactions; D002645:Chickens; D003429:Cross Reactions; D000939:Epitopes; D004912:Erythrocytes / Q000276:immunology; D006041:Goats; D051379:Mice; D009596:Nitrophenols; D010527:Perissodactyla; D012756:Sheep; D013045:Species Specificity; D013154:Spleen / Q000166:cytology / Q000276:immunology; D013950:Thymus Gland / Q000166:cytology / Q000276:immunology*
chemical_list: D000939:Epitopes; D009596:Nitrophenols