Macrophages and dendritic cells

They're similar, except dendritic cells can crawl into tight places, so they partol the the outer surfaces of the body (ex. skin, gastrointestinal tract) and identify possible pathogens.The main function of macrophages is to clean up waste and remove pathogens, though they also help regulate the inflammatory response and can activate the adaptive (specific immune system). Both cells will then engulf pathogens through phagocytosis, and present the pathogens' antigens to T-cells and B-cells in order to promote the specific immune response.