[The allotypic variants of the e14 pattern (author's transl)].

The e14 pattern, located on the Fc fragment of rabbit IgG molecules, can be detected by precipitating antiserum no 20633. The reaction in agar medium of this serum with a normal rabbit serum e14/e14 leads to the appearance of four precipitating zones. This result indicates the existence of at least four allotypic forms (or variants) belonging to the e14 pattern. Among these variants, one can be detected in the reaction of another anti-e14 serum no 822. All these observations imply the participation of a great number of e14 determinants in the e14 pattern. Carbohydrate structures might be involved in these determinants as those which belong to "Xg" pattern.