Expanding on our expertise in non-radioisotopic detection methods, we have developed new and improved ways of labeling nucleic acid probes. PHOTOPROBE®Biotin is used to randomly label any nucleic acid with biotin. The FastTag®labeling system allows nucleic acid to be easily and economically labeled with any marker. The 3’ EndTag™ and 5’ EndTag™ system provide simple methods to label only the ends of nucleic acid probes.