A rare adenosine deaminase allele (ADA6) in an Arab moslem village in Israel.

The rare allele ADA6, was detected in seven members of an Arab Moslem family from northern Israel. All had the electrophoretic pattern of heterozygotes ADA6--1. This phenotype was formerly described in a small German family. The individuals examined in this study are a small branch of a much larger family only part of which lives in Israel. The origin of the family was traced back to a tribe which migrated to Jordan in the XVIII th century from the Kingdom of Hegaz in the northern part of the Arabian peninsula.