GAMMA-GLOBULINS: QUANTITATIVE RELATIONSHIPS IN HUMAN SERUM AND NONVASCULAR FLUIDS.
Three types of gamma-globulins, gamma(2), gamma(IA), and yim, are present in certain body fluids and secretions in proportions significantly different from those of normal human serum. A lthough ylA-globulin is present in only small amounts in serum, it represents a major fraction of the gamma globulin of tears, bile, saliva, colostrum, and fluid of the small intestine.
Amniotic Fluid↗