During presentation of APC-bound antigen, macrophages and dendritic cells secrete the cytokine, , that activates T helper cells. interferon interleukin-1 None of the choices is correct. histamine interleukin-2

During presentation of APC-bound antigen, macrophages and dendritic cells secrete the cytokine, interleukin-1, that activates T helper cells

Explanation:

Macrophages interact with T cells in order to generate T cell activation in target organs, and are themselves activated by inflammatory messenger molecules (cytokines) produced by the T cells.

Macrophages produce toxic chemicals, such as nitric oxide, that can kill surrounding cells.

During presentation of APC-bound antigen, macrophages and dendritic cells secrete the cytokine, interleukin-1, that activates T helper cells

the correct answer is d