These are usually y-shaped proteins, present in blood or other bodily fluids of vertebrates. These antibody products are used by immune system for determining and neutralizing foreign objects, namely bacteria and viruses. At present, the size of antibody products market is worth more than US$ 3 billion.

Includes drugs, instruments and devices to prevent, detect, diagnose and treat antigens spreading through foreign substance that can weaken an immune response.

Are the heavy weight complex nitrogenous organic compounds usually made up of amino acids. These amino acids are grouped up in a linear chain and interconnected together with the help of peptide bonds occurring between the carboxyl and amino groups. Different types of proteins are amino acids, enzymes, peptides and recombinant protein. The proteins market in the global economy was $2.3 billion in 2005 which rose to $ 2.4 billion.