title: Proposed potency testing of smallpox vaccine. II. Comparative titration in rabbits, chick embryos and tissue culture.
mesh_terms: D000818:Animals; D002642:Chick Embryo; D011817:Rabbits; D012107:Research Design; D012899:Smallpox / Q000276:immunology*; D012900:Smallpox Vaccine; D014612:Vaccines / Q000494:pharmacology*
chemical_list: D012900:Smallpox Vaccine; D014612:Vaccines
keywords: SMALLPOX/immunology; VACCINES/pharmacology