AP BIOLOGY

Detailed explanation-1: -Macrophages and neutrophils (phagocytes) are the front-line defenders in your body’s immune system. They seek out, ingest, and destroy pathogens and other debris through a process called phagocytosis.

Detailed explanation-2: -Neutrophils can present antigens to antigen-specific memory CD4+T cells but MDCs and monocytes have the highest capacity.

Detailed explanation-3: -When microorganisms, such as bacteria or viruses, enter the body, neutrophils are one of the first immune cells to respond. They travel to the site of infection, where they destroy the microorganisms by ingesting them and releasing enzymes that kill them. Neutrophils also boost the response of other immune cells.

Detailed explanation-4: -Phagocytosis. The ability of neutrophils to ingest and subsequently kill invading microbes is essential for the maintenance of host health. Neutrophils remove bacterial and fungal pathogens through a process known as phagocytosis.