Question

which of the following are true of macrophages? multiple choice they are responsible for cellular immunity. they remove old blood cells. they produce antigens. they trap and digest cellular debris.

Explanation:

Macrophages are phagocytic cells. Their main function is to engulf and digest cellular debris, pathogens, etc. Cellular immunity is mainly mediated by T - cells. Macrophages do not produce antigens and are not the main cells for removing old blood cells (though they are involved in part of the process, but their key role is debris digestion).

Answer:

They trap and digest cellular debris.