• 1 January 1968
    • journal article
    • research article
    • Vol. 14  (1) , 89-+
Abstract
Tanned cell hemagglutination experiments showed that some fragments formed from human thyroglobulin after completed trypsin hydrolysis are able to react with a human thyroiditis auto-antiserum. These same fragments were unable to affect the precipitation reactions of the same antiserum. These results indicated that the antigenic sites prominent in the precipitation reaction in this immune system at least, are not those most prominent in hemagglutination. Evaluation of the immunological activity of the autoimmune serum on the single basis of its precipitation reaction may be misleading.