 A study found that by combining the sugar 2-deoxy-D-glucose (2-DG) with fenofibrate, a compound that has been safely used in humans for more than 40 years to lower cholesterol and triglycerides, an entire tumor could effectively be targeted without the use of toxic chemotherapy.2-DG has been used as a targeted optical imaging agent for fluorescent "in vivo" imaging.In clinical medical imaging (PET scanning), fluorodeoxyglucose is used, where one of the 2-hydrogens of 2-deoxy-D-glucose is replaced with the positron-emitting isotope fluorine-18, which emits paired gamma rays, allowing distribution of the tracer to be imaged by external gamma camera(s).