PASCAL GOETGHELUCK / SCIENCE PHOTO LIBRARY PASCAL GOETGHELUCK / SCIENCE PHOTO LIBRARY
Laboratory rat receiving an identifying mark using a purple dye. Laboratory rats are used in medical research because they are easy to breed and examine. This rat has been genetically modified for use in the laboratory. Photographed in the Health and Pollutants Laboratory of the INRS (the French National Institute of Research and Safety), Nancy, France. Tests are carried out here to establish the toxicity and cancer-causing properties of different materials, chemicals and pollutants.
Model release not available. Property release not required.