Abstract
Summary
A procedure is outlined for the preparation of WEE and EEE chicken embryo CF and HA antigens. High-titered, economical antigens were prepared using the sucrose-acetone method. Differences in titer and volume between extracted chicken embryo and mouse brain antigens are discussed, and preliminary comparisons are made of the relative reactivity of human patients' sera when tested by CF and HA methods using antigens from these two sources.
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