title: Studies on the standardization of smallpox vaccine. II. An assay with a rabbit immunized beforehand by active immunization.
mesh_terms: D000818:Animals; D001681:Biological Assay; D007110:Immunity, Active; D007118:Immunoassay; D007271:Injections, Intradermal; D007279:Injections, Subcutaneous; D008196:Lymph; D011817:Rabbits; D012900:Smallpox Vaccine / Q000494:pharmacology / Q000592:standards*
chemical_list: D012900:Smallpox Vaccine