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.
Classes of antibodies: 1  IgG - provides long-term immunity or protection. 2  IgM - first antibody produced in response to an antigenic stimulus. 3  IgA - found in secretions.  IgE - involved in allergic 1  reactions. IgD - not much known about 2  it. Most important classes of antibodies in blood banking are IgM and IgG, and to a certain extent  IgA.