Studies on the formation of hyperplastic focus by variola virus in human cell cultures. I. In vitro quantitation of variola virus by focus counting in HeLa and FL cell cultures.
D000818:Animals; D000941:Antigens / Q000032:analysis; D002499:Centrifugation, Density Gradient; D002642:Chick Embryo; D046508:Culture Techniques; D003588:Cytopathogenic Effect, Viral; D005455:Fluorescent Antibody Technique; D006367:HeLa Cells; D006965:Hyperplasia; D007106:Immune Sera / Q000494:pharmacology; D008722:Methods; D013194:Staining and Labeling; D012901:Variola virus / Q000302:isolation & purification*
D000941:Antigens; D007106:Immune Sera