IgA

Immunoglobulin A (IgA) is an antibody that plays a crucial role in the immune system, particularly in protecting mucous membranes. It is found in high concentrations in bodily fluids such as saliva, tears, and mucus, as well as in breast milk. IgA helps to prevent infections by identifying and neutralizing pathogens like bacteria and viruses before they can enter the body or spread. Its presence is essential for maintaining health, especially in areas where the body is exposed to the outside environment, such as the respiratory and digestive tracts.