Extracorporeal blood oxygenation and ozonation (EBOO) is a 2-hour treatment that purifies, enriches, and detoxifies 2 liters of live blood. During the treatment, blood is removed from the body and exposed to oxygen and ozone before being returned. This process floods the body with oxygen and kills cancer cells, bacteria, viruses, molds, yeasts, and fungi by producing immune-modulating compounds. EBOO clinics offer this alternative medical treatment which proponents claim can treat various conditions like cancer, AIDS, and multiple sclerosis by increasing oxygen in the body through ozone introduction.