21. The Immune System

How do cytokines function?

Which type of cytokine is used to recruit immune cells to the site of infection, inflammation, or tissue damage?

If the body needs to stimulate the production and proliferation of B cells, which type of interleukin signal would it use?

The "voices" of a cell, which carry messages, are:

In what process is tumor necrosis factor (TNF) not involved?

During presentation of APC-bound antigen, macrophages and dendritic cells secrete the cytokine _____, which activates T helper cells.