Using phage display technology, a novel mouse scFv phage clone DI was generated from mice immunized with single-chain HLA-A2, the human MHC class I molecules. D1 recognized a determinant in beta(2)-microglobulin. It reacted with beta(2)-microglobulin associated with the heavy chain of HLA-A2, recombinant beta(2)-microglobulin made in Escherichia coli or beta(2)-microglobulin prepared from human urine. The heavy chain variable region of D1 belongs to gene Family VII and the light chain variable region belongs to the kappa chain gene family XI according to the Kabat database. Published by Elsevier Science B.V.