Answer to Question #164913 in Human Anatomy and Physiology for Mary

Question

Macrophages

 A. carry class II major histocompatibility complex (MHC) antigens on their plasma membrane. B. secrete tumour necrosis factor (TNF).

 C. are activated by interferon-gamma (IFN-γ). 

D. are antigen presenting cells. 

E. secrete IgG.

Answer 1

Macrophages do not secrete IgG antibodies. The IgG antibodies are secreted by the B cells. Hence the option (E) is incorrect and does not describe the macrophage.