title: Studies on the standardization of smallpox vaccine. I. Evaluation of Groth's method.
mesh_terms: D000818:Animals; D007271:Injections, Intradermal; D008196:Lymph; D008722:Methods; D011817:Rabbits; D012900:Smallpox Vaccine / Q000592:standards*
chemical_list: D012900:Smallpox Vaccine