Sepia (dye) is a biological protective pigment that exists widely in animals, plants and microorganisms. It is a general term for a class of phenolic or indole biological macromolecular pigments with complex and diverse structures.
Sepia (dye) is a class of photoprotectants, anti-radiation agents, chelating agents, biological antioxidants and immunostimulants, which can resist snake venom, inhibit HIV replication and treat Parkinson's disease.
