Bacteriophage contamination in live poliovirus vaccine.
D003090:Coliphages / Q000302:isolation & purification*; D004340:Drug Contamination; D008458:Measles Vaccine / Q000592:standards*; D011055:Poliovirus Vaccine, Oral / Q000592:standards*; D010948:Viral Plaque Assay
D008458:Measles Vaccine; D011055:Poliovirus Vaccine, Oral