title: Changes in delayed-type hypersensitivity and helper function activities of T cell lines and clones during long-term culture.
mesh_terms: D000818:Animals; D002460:Cell Line; D002999:Clone Cells / Q000276:immunology; D006968:Hypersensitivity, Delayed; D051379:Mice; D013601:T-Lymphocytes / Q000276:immunology*; D006377:T-Lymphocytes, Helper-Inducer / Q000276:immunology; D013997:Time Factors