Gamma globulins are a class of globulins, identified by their position after serum protein electrophoresis. The most significant gamma globulins are immunoglobulins (Igs), more commonly known as antibodies, although some Igs are not gamma globulins, and some gamma globulins are not Igs. . Description: Normal Pig serum. Alternative Names: Swine Serum gamma Globulin, Porcine gamma Globulin