Question

which of the following is a signaling molecule that recruits other immune system cells to the site of injury or infection?
o cytokin
o
o tlrs
o

Explanation:

Cytokines are signaling molecules in the immune system that help recruit other immune cells to sites of injury or infection. Hormones are more general signaling molecules for various bodily functions (not specific to immune recruitment). T - cells are a type of immune cell, not a signaling molecule. Eosinophils are a type of immune cell (like T - cells) and not a signaling molecule for recruitment.

Answer:

A. cytokines