The concentrations and distribution patterns of six trace elements were investigated in tissues of bactrian camels from sandy desert and gravel desert areas. It was found that the liver contained the highest concentrations of copper, manganese, iron and molybdenum, and the kidney and muscle the highest concentrations of selenium and zinc, respectively. The concentrations of copper in liver and kidney of bactrian camels from the two study areas have significant difference because the molybdenum and iron cont...