Why was this study done?

Certain selenium compounds have the potential to be harmful and may arise if raw materials for supplements are not chosen wisely. This study was designed to test the toxicity of different selenium compounds.

What did the study find?

This study found that selenocystine was potentially toxic, but sodium selenite was not.

Cytotoxic Activity of Selenium Compounds and Glutathione Peroxidase Assessed by Scanning Electron Microscopy
Authors: Spallholz JE, et al. Fed Proc, 1982. 41(3):529.
PDF Abstract: Fed Proc, 1982.