The peptide region containing residues 390-404 in Activated Protein C (APC) is essential for anticoagulant activity and is available for interaction with antibodies or with other proteins, such as the macromolecular substrates Factors Va or VIIIa. APC regulates blood coagulation by proteolytic inactivation of the blood coagulation cofactors Va and VIIIa.

DAPI Dihydrochloride is a cell-permeable fluorescent probe by binding in the minor grove of A-T rich sequences of DNA, used to stain DNA and chromosomes, with a preference for adenine and thymine rich DNA.

72'-dihydroxy-3'4'-dimethoxyisoflavane-7-O-glucoside is a natural product from Astragalus membranaceus.