title: The appearance of specific helper cells in lymph of immunized sheep.
mesh_terms: D000818:Animals; D000921:Antibody-Producing Cells / Q000166:cytology / Q000276:immunology; D000941:Antigens / Q000008:administration & dosage; D001402:B-Lymphocytes / Q000166:cytology / Q000276:immunology; D002454:Cell Differentiation; D002645:Chickens; D000939:Epitopes; D004912:Erythrocytes / Q000276:immunology; D005260:Female; D006736:Horses; D008196:Lymph / Q000166:cytology* / Q000276:immunology; D008297:Male; D012397:Rosette Formation; D012756:Sheep; D013601:T-Lymphocytes / Q000166:cytology* / Q000276:immunology / Q000528:radiation effects
chemical_list: D000941:Antigens; D000939:Epitopes