Nordihydroguaiaretic acid (NDGA) is a phenolic antioxidant found in the leaves and twigs of the evergreen desert shrub, Larrea tridentata (Sesse and Moc. ex DC) Coville (creosote bush).

Extracellular death factor (EDF) is the only single signaling molecule involved in Escherichia coli quorum sensing, and can initiate MAZEF-mediated cell death. Extracellular death factor significantly amplifies the endoribonucleolytic activities of both MazF and ChpBK.

CCP peptide TFA is a synthetic cyclocitrullinated peptide (CCP) that ACTS as a serum substrate for the detection of anti-ccp antibodies.