Question: where are antibodies found within the blood?
Answer: For example, IgG, the most common antibody, is present mostly in the blood and tissue fluids, while IgA is found in the mucous membranes lining the respiratory and gastrointestinal tracts. classes of antibodiesThe five main classes of antibodies (immunoglobulins): IgG, IgA, IgD, IgE, and IgM.