What is the main function of macrophages?

Macrophages are a type of white blood cell that plays a crucial role in the immune system. Their main function is to identify, engulf, and digest cellular debris, pathogens, and foreign substances through a process called phagocytosis. Additionally, they help coordinate the immune response by releasing signaling molecules called cytokines and presenting antigens to T cells, thereby facilitating adaptive immunity. Overall, macrophages are essential for maintaining tissue homeostasis and defending against infections.