The Company(Season 7, Episode 20) ION. Morgan's missing cousin, Cindi, reappears, and Morgan must come clean about a lie he told concerning her. In addition, the BAU reopens the investigation into Cindi's disappearance.
Selenium in biology. Although it is toxic in large doses, selenium is an essential micronutrient for animals. In plants, it sometimes occurs in amounts toxic as forage, e.g. locoweed. Selenium is a component of the amino acids selenocysteine and selenomethionine.
Selenium is a trace mineral that our bodies use to produce glutathione peroxidase . Glutathione peroxidase is part of the body's antioxidant defense system; it works with vitamin E to protect cell membranes from damage caused by dangerous, naturally occurring substances known as free radicals.