Immunoglobulin G (IgG)- Structure, Subclasses and Functions

Immunoglobulin G (IgG)- Structure, Subclasses and Functions

Antibodies, or ‘immunoglobulins’, are glycoproteins that bind antigens with high specificity and affinity. In humans there are five chemically and physically distinct classes of antibodies (IgG, IgA, IgM, IgD, IgE). Immunoglobulin G (IgG), the most abundant type of antibody, is found in all body fluids and protects against bacterial and viral infections. It represents approximately 75% of serum antibodies in humans and thus …

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