The Serological Relationship Between Human Milk and Blood Plasma

Abstract

Immunoelectrophoresis employing antiplasma, anticolestrum, antimilk immune sera as well as sera against various fractions of blood plasma showed the presence of at least 18 antigenically active substances present in both plasma and in milk. The only major fraction from plasma consistently absent in milk was [alpha]2-macroglobulin. Six antigens in milk remained unidentified. Differences between colostrum and milk were small and seemed to be mainly quantitative in nature.