Document Type



Three studies exemplify strategies in research in human biology. In the first, a study of HLA antigens in diabetic children, differences in growth of diabetics of different HLA types are recorded. In the second study, genetic variability among the human populations of the subregions of Cumbria and the Shetland and Orkney islands are examined: findings concerning genetic distances differ from those from geograph­ical relationships and migration data. The third study shows that the extent of individual heterozygosity is an easy to calculate and interesting property of human populations.