Question

Which one of the following steps would be included in the primary response in humoral immunity?

A. Antigen binds to antibodies
B. Cytotoxic T cells bind to infected body cells and destroy them
C. Helper T cells activate cytotoxic T cells
D. A macrophage consumes a virus and displays antigens on its surface and signals helper T cells to divide.

Answer 1

The primary immune response in humoral immunity, when we're talking about our body's natural defence capabilities against harmful foreign or domestic invaders would be when a macrophage consumes a virus and displays antigens on its surface and signals helper T cells to divide - D. This is usually our first line of defence found on the spot.