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 Glands and Saliva. 1  parotid glands-produce a serous, watery secretion. 2  submaxillary (mandibular) glands-produce a mixed serous and mucous secretion. 3  sublingual glands-secrete a saliva that is predominantly mucous in character. 4  serous cells, which secrete a watery fluid, essentially devoid of mucus.