mucosal antigen sampling

Mucosal antigen sampling is the process by which the body's immune system monitors the surfaces lining the nose, mouth, intestines, and other openings. Specialized cells, called M cells and immune cells, detect foreign particles like bacteria or viruses and transport them across the mucous membranes. This allows the immune system to recognize potential threats quickly and initiate an appropriate response, helping to protect the body from infections. Essentially, mucosal sampling is the body's way of "keeping watch" at entry points, ensuring it can respond promptly to harmful invaders.