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Researchers studied the isopod's ingestion of microplastics under a light microscope, with the help of a fluorescence microscope, and with an electron microscope. They were able to trace the path of the microplastic particles through the isopods and determine the concentrations of the particles in different sections of the digestive system. The isopods ingested and excreted the artificial food with the microplastic particles without absorbing or accumulating the particles. [Source: Alfred Wegener Institute for Polar and Marine Research]
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