National Blood Authority

Benjamin A Bradley

Alan Doyle

Belinda Mary Kumpel

The present invention provides human monoclonal antibodies having the following essential characteristics: (a) binding to Rh(D) antigen, but not C, c, E or e antigens of the Rh blood group system; (b) being IgGl proteins; (c) having kappa light chains; (d) being Glm(3) or Glm(1,17) allotype; (e) binding to D.sup.u cells by an indirect antiglobulin test; (f) binding to D.sup.IV, D.sup.V and D.sup.VII variant antigens; and (g) not binding to D.sup.VI or D.sup.B variant antigens, which may be employed for Rh-typing of red blood cells and passive immunization to prevent hemolytic disease of the newborn. Such a monoclonal antibody is exemplified by the monoclonal antibodies of cell lines ECACC 87091605 and 87091604 deposited at the European Collection of Animal Cell Cultures, Public Health Laboratory Service Center for Applied Microbiology and Research, Porton Down, Salisbury, Wiltshire, SP4, OJG, England on 16th September 1987.

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Winterbourne Down, United Kingdom

Benjamin A Bradley