Abstract
Summary
1. Antibodies were demonstrated in BALB/c mice which had received an injection of lyophilized homologous tumor S621 in Freund's adjuvant by the following technics: tumor regression; in vitro anaphylaxis using the Schultz-Dale reaction; decrease in the number of exudate cells when cells were incubated with antigen and complement. 2. Mice which recovered from a challenge injection of viable tumor were shown to react when tested by the Schultz-Dale technic.
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