PATRICK LANDMANN / SCIENCE PHOTO LIBRARY PATRICK LANDMANN / SCIENCE PHOTO LIBRARY
Laboratory pig (Sus scrofa). Researcher with a syringe approaching a pig inside an animal research laboratory. Because of their close similarity in physiology to humans, pigs are widely used in animal research. Photographed at the Zentralen Tierlaboratorien (ZTL, Central Animal Laboratory) in Berlin, Germany.
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