摘要： Seven monoclonal antibodies(McAbs)specific for Plasmodium falciparum from human immune seraof three individuals,two adults and one child(six years old),living in a malaria endemic area in Hainanprovince and immune sera of BALB/c mice immunized with the erythrocytic stages of P.falciparumwere used to identify the protective antigens present in the asexual blood stages of falciparum malaria.The McAbs designated 93A3,94B5,92D4 and 93D4 all immunoprecipitated the ~125I-labcled polypepti-des with apparent MWs of 125,115,83,74 and 67 KD.In addition,the 35S-methionine-labeled polype-