Dw/LD-related molecular polymorphism of DR4 β-chains

Abstract
The results of this study demonstrate the existence of molecular heterogeneity (polymorphism) within DR beta-chains isolated from a single serologically defined DR phenotype, DR4. The data are consistent with the possibility that this polymorphism is related to the Dw/LD phenotype as defined with the cellular reagents, homozygous typing cells.