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Fluorescing urine signals organ transplant rejection, could replace needle biopsies

Glowing urine may replace the biopsy needle: In detecting organ transplant rejection, a new nanoparticle has proven much faster and more thorough in the lab than a biopsy. When T cells mount their first attack on the organ’s cells, the nanoparticle sends an alarm signal into the urine that makes it fluoresce.

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