Before revision: It is a photosensitiser (activated by 675nm red light) sometimes used in photodynamic therapy URL "Adjuvant photodynamic therapy (PDT) with photosensitizer photosens for superficial bladder cancer.
After revision: It is a photosensitiser (activated by 675 nm red light) sometimes used in photodynamic therapy URL "Adjuvant photodynamic therapy (PDT) with photosensitizer photosens for superficial bladder cancer.