Serine is a non essential amino acid, which plays a role in the metabolism of fat and fatty acids and the growth of muscle, because it contributes to the production of immunoglobulin and antibody. Serine is also needed to maintain a healthy immune system. Serine plays a role in the manufacture and processing of cell membrane, the synthesis of muscle tissue and sheath surrounding nerve cells. Therefore, serine is mainly used in biochemical research, preparation of tissue culture medium, and as an amino acid nutrient in medicine.