mabs 3.50 and 3.186 immunoprecipitate antigens of molecular weight 55,000 and 36,000 , respectively , while mabs 3.80 , 3.177 , and 3.187 all precipitate a molecular weight 47,000 protein , suggesting that they may detect epitopes on the same antigen .
C0003316
epitopes
C0003320
antigen