title: A T-cell factor that measures intermediate steps in in vivo immune responses.
mesh_terms: D000818:Animals; D000917:Antibody Formation; D000941:Antigens / Q000008:administration & dosage; D001402:B-Lymphocytes / Q000166:cytology; D002454:Cell Differentiation; D002478:Cells, Cultured; D006462:Hemolytic Plaque Technique; D006801:Humans; D051379:Mice; D013156:Splenectomy; D013601:T-Lymphocytes / Q000276:immunology*; D013997:Time Factors
chemical_list: D000941:Antigens