The light chains can be immunoglobulin fragments or single homogeneous immunoglobulins. Plasma cells produce immunoglobulins, which are commonly called antibodies. The immunoglobulins or antibodies are generally the only proteins present in the normal gamma region. Also, intravenous immunoglobulins (IVIGs) can be used to bind the circulating antibodies. Glycoproteins are relevant as cell-surface receptors, cell-adhesion molecules, immunoglobulins, and tumor antigens. The immunologically active gamma globulins are also called "immunoglobulins" or "antibodies". Most of the proteins remaining are albumin and immunoglobulins. Direct immunofluorescence can detect deposits of immunoglobulins and complement proteins in the people's skin. Antibiotics, intravenous immunoglobulins, and corticosteroids may also be used. Medications that alter immune function, such as intravenous immunoglobulins, are poorly supported by evidence. Treatment is with corticosteroids and possibly intravenous immunoglobulins. Under immunofluorescence, there are no immunoglobulins or complement deposits bound to kidney tissue. Dairy cattle are naturally exposed to pathogens and produce immunoglobulins against them. Finally, increased biliary pressure decreases production of IgA immunoglobulins in the bile. The company has developed a technological platform for the production of specific immunoglobulins (IgG's).