Some of the saltiest sources of packaged foods include: 1  deli meat. 2  frozen pizza. 3  vegetable juices.  canned 1  soup. canned or bottled tomato products.
Antibodies show the following characteristics and perform different functions. (i) IgA: It is the second most abundant class, constituting about 10 to 15 per cent of antibodies of serum. It is mainly found in sweat, tears, saliva, mucus, colostrum (first milk secreted by a mother) and gastrointestinal secretions. Smaller quantities are present in blood and lymph.
Salivary mucins are extremely large proteins carrying chains of sugar residues linked together. In saliva there are two main types of mucin, designated mucin glycoprotein 1 (MG1) and the smaller mucin glycoprotein 2 (MG2). MG1 is encoded by the MUC5B gene and MG2 is encoded by the MUC7 gene.he secreted form of IgA is called secretory IgA (or S-IgA). It is found at all mucosal sites, such as the gastrointestinal tract, respiratory tract and urogenital tract, and it is also present in tears and breast milk (in addition to saliva).