IgA Immunity: IgA is the main antibody found in mucosal surfaces like the respiratory and digestive tracts, playing a key role in neutralizing pathogens and preventing their entry into the body.
Mucosa Associated Lymphoid Tissue MALT Nodule: MALT includes lymphoid nodules in mucosal tissues like the tonsils and PeyerÂ’s patches, providing immune defense at sites exposed to external pathogens.