[Quantitative study of ABH antigens in the saliva of newborns and adults]

The results of comparative quantitative investigations of the inhibiting strength of salivas from adults and newborn infants are presented. It is found that A and B salivary antigens of newborn infants have a significantly weaker inhibiting strength than those of adults. Opposite proportions are established in relation to salivary H antigens. Two types of quantitative changes of the inhibiting strength of the salivas from AB groups are registered and they are supposed to be a result of the competition of A and B gene products.