Before 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.Experimental investigations to treat prostate cancer by PDT with photosens" 2007URL "Photodynamic therapy (PDT) of malignant tumors by photosensitzer photosens: results of 45 clinical cases " 1996
After revision: It is a photosensitiser (activated by 675 nm red light) sometimes used in photodynamic therapy trials.