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Shining a Light on Microplastic Transport in the Body

NIR-II fluorescent labeling reveals how nanoscale plastic fragments move through the gut

  • March 16, 2026

  • 3 min

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Researchers at the Tokyo University of Science have developed a novel fluorescent imaging method in the NIR-II window to track the movement of microplastics through biological systems. Unlike traditional spherical models, their nanoscale particles, made from common plastics like PET and PS, more accurately reflect environmental microplastics. Experiments in mice indicated that these particles primarily remain within the gastrointestinal tract for extended periods, with minimal absorption into other organs. This advancement aims to elucidate the biological fate of microplastics and their potential health impacts.

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Shining a Light on Microplastic Transport in the Body

  • March 16, 2026

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