Antigenic Determinants Antibodies recognize and react with antigenic determinants or epitopes. Antibody A Antigenic determinants on antigen Antigens: 68eo8 onents Binding sites O口O 口△ △0▣ Bacterial cell △△O 00△ Antibody B 口口U Figure 17.3Antigenic Determinants • Antibodies recognize and react with antigenic determinants or epitopes. Figure 17.3