any one of a class of globular proteins which are antibodies and are produced by the immune system in animals.
A protein produced by plasma cells; an essential part of the bodyâ€(tm)s immune system. Immunoglobulins attach to foreign substances (antigens) and assist in destroying them. The classes of immunoglobulins are IgA, IgG, IgM, IgD, and IgE.
any of 5 classes (IgM, IgG, IgA, IgE, IgD) of antibody.
when administered, an antibody that confers short-term immunity; immune gamma globulin (IGG) provides passive protection against viral infections such as hepatitis A, measles, rubella, and varicella; immune globulin (human) (IGH) is used to prevent hepatitis B.