applications. The affinity of these stains/compounds for GC-rich regions of DNA strands makes them excellent markers for DNA. 7-AAD binds to single stranded DNA; therefore it is a useful tool in determining apoptosis and distinguishing between dead cells and live ones. References External links Polypeptide antibiotics DNA replication inhibitors Depsipeptides Cyclic peptides IARC Group 3 carcinogens World Health Organization essential medicines Wikipedia medicine articles ready to translate DNA intercalaters