title: How T cells count.
authors.affiliation: Division of Biology, California Institute of Technology, Pasadena, 91125, USA.
authors.forename: E V
authors.initials: EV
authors.lastname: Rothenberg
mesh_terms: D000938:Antigen-Presenting Cells / Q000276:immunology; D000941:Antigens / Q000276:immunology; D018106:CD28 Antigens / Q000276:immunology; D015536:Down-Regulation; D006801:Humans; D008024:Ligands; D008213:Lymphocyte Activation; D011948:Receptors, Antigen, T-Cell / Q000276:immunology*; D013601:T-Lymphocytes / Q000276:immunology*
chemical_list: D000941:Antigens; D018106:CD28 Antigens; D008024:Ligands; D011948:Receptors, Antigen, T-Cell