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Immunoglobulin G (IgG) is the main immunoglobulin in natural human serum. It constitutes 70 to 75 percent of all immunoglobulins. Monoclonal antibodies have many applications in diagnosis, treatment and purification. And all approved therapeutic mAbs are IgG (most are IgG1), which has been well-characterized for effector functions, including complement fixation and half-life prolongation.<br /><br />Maltotriose is a trisaccharide (three-part sugar) consisting of three glucose molecules linked with α-1,4 glycosidic bonds. It is most commonly produced by the digestive enzyme alpha-amylase (a common enzyme in human saliva) on amylose in starch. The creation of both maltotriose and maltose during this process is due to the random manner in which alpha amylase hydrolyses α-1,4 glycosidic bonds.