"Fab fragment" . "Fragment Antigen-Binding" . "Fab" . "Antigen-binding fragment (Fab)" . "FAB" . "Antigen-binding fragment" . "antigen-binding region" . "fragment antigen-binding" . . "F(ab')₂ portions" . . "antigen binding region" . "variable region" . "Fab Region" . "antibody fragment" . . "Fragment antigen-binding" . "antigen-binding fragment (Fab)" . "fragments antigen-binding" . "antigen-binding fragment" . "fragment, antigen-binding" . "Fab'" . "antigen-binding domain" . "Fragment antigen-binding" . "antigen-binding" . "Fab region" . . "Fab fragments" .