Macrophages can pass through blood vessels and travel through tissues to the location of an infection. Once at the infection site, macrophages surround, ingest, and destroy the pathogens by phagocytosis.
Macrophages are important cells of the immune system that are formed in response to an infection or accumulating damaged or dead cells. Macrophages are large, specialized cells that recognize, engulf and destroy target cells. The term macrophage is formed by the combination of the Greek terms "makro" meaning big and "phagein" meaning eat. (if this helps)
<span>The answer to coprolites may contain fragments of undigested food, and thus provide valuable information about the feeding habits of fossil organisms is true. </span>