BRIAN YARVIN / SCIENCE PHOTO LIBRARY BRIAN YARVIN / SCIENCE PHOTO LIBRARY
Syringe. View of a needle on the end of a syringe. Several bottles containing solutions of drugs can be seen at upper left. The solutions can be drawn into the syringe in precise quantities, as measured by the scale along the side of the syringe's chamber. The graduations seen here measure volumes in millilitres.
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