Macrophages bind to the _____ region of IgG antibodies, thereby triggering phagocytosis of antibody-antigen complexes.
A) Fab
B) Fc
C) epitope
D) hinge
E) antigen

Question

Quizplus · Accepted Answer

Macrophages bind to the Fc region of IgG antibodies through their Fc receptors, which triggers phagocytosis of antibody-antigen complexes. The Fab region of IgG antibodies binds to antigens, not macrophages. The antigen and epitope are not part of the IgG antibody structure. The hinge region is responsible for the flexibility and movement of the antibody.

Macrophages Bind to the _____ Region of IgG Antibodies, Thereby