title: Introductory remarks.
authors.affiliation: Medical Research Council Laboratory of Molecular Biology, Hills Road, Cambridge CB2 2QH, UK.
authors.forename: A
authors.initials: A
authors.lastname: Klug
mesh_terms: D000818:Animals; D002986:Clinical Trials as Topic; D015658:HIV Infections / Q000453:epidemiology* / Q000635:transmission; D006801:Humans; D011055:Poliovirus Vaccine, Oral / Q000009:adverse effects*
chemical_list: D011055:Poliovirus Vaccine, Oral