title: Duration of exposure of lymphocytes to antigen in vitro needed to induce blast transformation.
mesh_terms: D000937:Antigen-Antibody Reactions; D001345:Autoradiography; D046508:Culture Techniques; D006801:Humans; D008214:Lymphocytes / Q000187:drug effects / Q000276:immunology*; D008264:Macrophages; D013745:Tetanus Toxoid / Q000494:pharmacology; D013936:Thymidine; D014316:Tritium; D014373:Tuberculin
chemical_list: D013745:Tetanus Toxoid; D014373:Tuberculin; D014316:Tritium; D013936:Thymidine