ABSTRACT
Objective Study on producing human monoclonal antibodies against Rhesus (D) antigen that was suitable for use as blood group typing reagent. Methods B lymphocytes from a Rh negative woman, which can produce anti D antibodies were transformed by Epstein Barr virus(EBV). Antibody secreting cells were enriched by RhD + group O erythrocytes and cloned by limited dilute method. By using one step emzymatic method on microplates, one thousand normal blood donors with a common Rh phenotype were tested with the supernatant of cell culture medium as well as a polyclonal human anti D and a commercial monoclonal anti D serum. Results Three human B lymphocyte lines secreting monoclonal antibodies to Rh (D) were established. One of them produced lgM antibody. The titer of the monoclonal antibodies was 64～128. Study on 1000 blood donors, the results did not show any discrepancy among the three different anti Rh(D) serum. Conclusion These monoclonal antibodies against D antigen could be used in Rh(D) typing.