mucosal immune response

The mucosal immune response is the body's defense system that protects the inside surfaces of areas like the nose, mouth, and gastrointestinal tract, which are common entry points for germs. When pathogens such as viruses or bacteria invade these mucous-lined surfaces, specialized immune cells detect and respond by producing antibodies called IgA. These antibodies help neutralize the invaders and prevent infections from spreading deeper into the body. The mucosal immune system is essential for frontline defense, maintaining health by blocking many pathogens at the point of entry before they can cause illness.