[Nonspecific resistance of the body and predisposition to acute leukemia in children].

An analysis of 422 Moscow hospital records of children suffering from acute leukemia during the period from 1959 and continuing through to 1979 showed that the proportion of those with morphologically "average" weight and body length values at birth, was significantly lower in the group with leukemia, than in the control group of healthy children. Genetic structure of leukemic and healthy children was found to be significantly different by phenotypic combinations of 2 loci (ABO and Rhesus). The distribution of children for their age at the beginning of the disease was studied.