ECOGENETIC ASPECTS OF THE STUDY OF PHENOTYPES AND LEVELS IN BETA-AMINOISOBUTYRIC ACID EXCRETION

The levels of excretion of beta-aminoisobutyric acid (BAIB) in urea were examined in five groups. The distribution of BAIB concentration revealed the existence of high and low excretors in each group. Asbestosis patients had the lowest frequency of high excretors. The BAIB concentration among high excretors was similar for all the groups. The BAIB levels of low exretors varied. The most alike were two children groups, asbestosis patients and the workers from the town Asbest.