0 a chemical element used in photography and also necessary in small amounts in the body (symbol Se) -- selen
They have ranged from anthropological problems and problems concerning the relations between families or nations, to research on the toxicity of selenium.
Selenium is an essential trace element which is particularly important in protecting the body against oxidative damage of the cells.
I now wish to ask questions about the three metallic substances, uranium, beryllium and selenium.
We are all pleased to see that the various forms of arsenic trioxide have now been exempted and that selenium has been taken out.
Selenium is a substance listed here, and it also is very toxic, affecting particularly the lungs and trachea.
I should like very much to know what happens in the manufacture of selenium and what it is used for.
No action is recommended specifically to avoid selenium deficiency.
There is a known selenium deficiency in the soils in this country.
