A further example of Kp1/Ko exhibiting depression of some Kell group antigens.

This paper gives details of a family in which there are numerous examples of the heterozygous Kdegree state. The study was initiated by the presence of anti-Kpb in the serum of the propositus. Reactions with anti-K, anti-Ku, anti-Jsb and anti-K13 confirm that the Kdegree gene in trans with Kpa results in weaker expression of these Kell antigens. One example of anti-K showed some evidence of dosage effect with kKpb/Kdegree cells, but these results were not confirmed by quantitation studies.