title: Replicate titrations of a vaccinia virus batch by two different titration methods.
mesh_terms: D000818:Animals; D002642:Chick Embryo; D002645:Chickens / Q000276:immunology; D046508:Culture Techniques; D004912:Erythrocytes / Q000276:immunology; D005069:Evaluation Studies as Topic; D005321:Extraembryonic Membranes; D006382:Hemadsorption; D008722:Methods; D012900:Smallpox Vaccine / Q000592:standards*; D013223:Statistics as Topic; D014616:Vaccinia virus / Q000254:growth & development / Q000302:isolation & purification*; D014776:Virus Cultivation; D014779:Virus Replication
chemical_list: D012900:Smallpox Vaccine