Bovine MHC (BoLA-) DRB3 alleles encoded by the DH8A, DH22A and DH24A class
II haplotypes were cloned from cDNA and characterized by sequence analysis.
Comparison with other full-length DRB3 sequences suggested that DRB3 allel
es may have evolved through multiple lineages. All three BoLA-DRB3 alleles
were shown to express on the surface of transfected cells, and the transfec
tants were used to define or confirm the class II specificity of a panel of
monoclonal antibodies.