The Preservation of Yellow Fever Immune Sera

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

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H. A. Penna Yellow Fever Laboratory of the International Health Division of the Rockefeller Foundation, Bahia, Brazil

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Summary

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.

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