binding inhibition analyses strongly suggest that the other monoclonal antibodies , which failed to inhibit nuclease activity detect two different antigenic regions , or epitopes , of the molecule : epitope cluster 1 domain is defined by hybridomas 54-2-7 , 54-5-2 , 54-9-8 , and 54-10-8 ;
C0003320
antigenic
C0003316
epitope