instruction:
Given a scientific question, generate a correct answer to it.
question:
Activated macrophages and neutrophils discharge what that signals molecules that enhance an immune response?
answer:
cytokines

question:
Radon is inert and generally unreactive because it is which kind of gas?
answer:
noble gas

question:
What do you call an object that attracts certain materials such as iron?
answer:
magnet