title: Expanded programme on immunization. Stability of oral polio vaccine after repeated freezing and thawing.
mesh_terms: D004355:Drug Stability; D004356:Drug Storage / Q000379:methods / Q000592:standards; D005069:Evaluation Studies as Topic; D005615:Freezing; D006358:Hot Temperature / Q000009:adverse effects*; D006801:Humans; D011055:Poliovirus Vaccine, Oral / Q000592:standards*
chemical_list: D011055:Poliovirus Vaccine, Oral