The Preservation of Yellow Fever Immune Sera

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  • Yellow Fever Laboratory of the International Health Division of the Rockefeller Foundation, Bahia, Brazil


The results of titrations indicate that preservation of yellow fever immune serum by rapid desiccation in vacuo and in the frozen state causes no titrable reduction (by the methods of experiment) in the “immune protecting antibody” content after storage at refrigerator temperatures for a period of five months.