LEWIS HOUGHTON / SCIENCE PHOTO LIBRARY LEWIS HOUGHTON / SCIENCE PHOTO LIBRARY
Drug sample testing. Researcher placing samples in a plate reader machine as part of drug testing. Plate readers are used to test samples contained in microplates (also called microwell plates or multiwell plates). Plate readers are photometers that use absorbance, fluorescence and luminescence methods to detect changes in samples, such as during a chemical reaction to detect a drug. Photographed in a biomedical research laboratory.
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