Dictionary of Cancer Terms
View in Spanish: Fase I de desintoxicación
Phase I detoxification (FAYZ dee-TOK-sih-fih-KAY-shun)
A process in which the liver uses one of two major enzyme pathways to change a toxic substance, such as an anticancer drug, into a less toxic substance that is easier for the body to excrete.
Source: National Cancer Institute Dictionary of Cancer Terms, available at www.cancer.gov/dictionary.