PASCAL GOETGHELUCK / SCIENCE PHOTO LIBRARY PASCAL GOETGHELUCK / SCIENCE PHOTO LIBRARY
Laboratory rats in cages. Laboratory rats are used in medical research because they are easy to breed and examine. These rats have 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 required. Property release not required.