From a superficial examination of the immunoelectrophoretic diagram it may be concluded that gamma globulins are completely absent from the serum of a sterile rat. But a more detailed study proves that only the relatively slow electrophoretic mobility component of the gamma globulins is missing.
Trans. of Academie des Sciences, Paris. Comptes Rendus (France) v254 n11 p2100-2102, 12 Mar 1963.