title: Memory in disguise.
authors: Federica
authors: F
authors: Sallusto
authors: Antonio
authors: A
authors: Lanzavecchia
mesh_terms: D000818:Animals; D049109:Cell Proliferation; D006801:Humans; D007156:Immunologic Memory; D016176:T-Lymphocyte Subsets / Q000276:immunology*; D013601:T-Lymphocytes / Q000166:cytology* / Q000276:immunology*