[Seasonal changes in the lipid composition of the bile in Evens and Evenki]

Altogether 156 Evenks and 162 Evens were examined in the reindeer regions of Evenkia and the Yakut Republic located in the extreme north of Russia. Seasonal changes in the concentration and ratio of bile lipids were discovered. The conclusion is made that space and time coordinates are of importance for the diagnosis and treatment of biliary tract diseases in northern nations.