Monoclonal Anti‐K14 and Anti‐K2

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Abstract
Mouse hybridoma clones have produced monoclonal antibodies directed against the K:14 and K:2 high‐incidence antigens of the Kell blood group system. Two examples of anti‐K14 were isolated, each arising from a separate fusion procedure. All three monoclonal antibodies are of the immunoglobulin class IgGl. Serological activity is consistent with that seen with human antibodies to high‐incidence Kell system antigens, and their epitopes are destroyed, as usual, by 2‐aminoethylisothiuronium bromide treatment. Specificity was further confirmed by adsorption and elution studies. Tests against nonhuman primate red cells demonstrated the expression of K:14 only by the great apes, whereas K:2 was present on all red cells tested. These findings emphasize the usefulness of monoclonal antibodies to elucidate the evolutionary patterns of blood group variants.

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