I think the answer is c but I looked it up and got this: system or thing used as an example to follow or imitate.
Answer: no it is not true
Explanation:
Phagocytosis and the inflammatory response. Macrophages are a cornerstone of the innate immune system. ... Recent work indicates that Toll-like receptors play a key role in reading a "bar code" on invading microorganisms and in eliciting a specific immune respone.
