title: [Refractory respiratory tract infections. 2. Disorders of the defense mechanism and infection. e. The aged].
authors.forename: K
authors.initials: K
authors.lastname: Kida
authors.forename: T
authors.initials: T
authors.lastname: Matsuse
mesh_terms: D000368:Aged; D000375:Aging / Q000276:immunology*; D000917:Antibody Formation; D003428:Cross Infection / Q000209:etiology; D006801:Humans; D007111:Immunity, Cellular; D011014:Pneumonia / Q000453:epidemiology / Q000209:etiology* / Q000382:microbiology