Abstract
The urinary excretion of 3-methoxy-4-hydroxymandelic acid was determined in 41 monozygotic and 24 dizygotic twin pairs, all male and horn between 1920 and 1929. The results are presented with the respective concentration of creatinine as the reference. The intrapair variance in the monozygotic twins was significantly smaller than in the dizygotic pairs living together for more than 28 years.

This publication has 5 references indexed in Scilit: