title: Immunological principles and emerging strategies of vaccination for the elderly.
authors.affiliation: Geriatric Research Education and Clinical Center, Saint Louis VA Medical Center, Missouri.
authors.forename: D C
authors.initials: DC
authors.lastname: Powers
mesh_terms: D000375:Aging / Q000276:immunology*; D000917:Antibody Formation; D001402:B-Lymphocytes / Q000276:immunology*; D006801:Humans; D007111:Immunity, Cellular; D013601:T-Lymphocytes / Q000276:immunology*; D014611:Vaccination