EN
The content of Cd, Cu, Zn and metallothioneine in the kidneys and livers of horses and cattle, coming from the Biała Podlaska, Chełm, Lublin and Zamość districts, was determined. The concentrations of the metals in the tissues were determined by absorptive atomic spectophotometry (ASA). The content of metallothioneine (MT) in livers and kidneys was measured by the radiometric method introduced by Piotrowski. In the tissues under study the rate of Cd, Zn or Cu over quota was not discovered. An increased content of Cd was found only in the liver and kidneys of cattle from the Lublin territory.