[Inhibition antibodies identified as anti-IgE]

Ten years ago the author described a precipitating agens which has been seen by immunreaction serum before and after desensitization. Now it was possible to identify it as Anti-IgE. Our first terminus was "Hemmantikörper" (inhibition antibody). Contrary to Cooke's "blocking antibody" (= IgG) Anti-IgE is an IgM-Antibody. According to earlier statement once more could be established that "Hemmantikörper" are specific to allergen but not specific to the individuum.