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A pioneering study to gauge the toxicity of quantum dots in primates has found the tiny luminescent crystals are safe over a one-year period, a hopeful outcome for doctors and scientists seeking new ways to battle diseases like cancer through nanomedicine.
In the study, scientists found that four rhesus monkeys injected with cadmium-selenide quantum dots remained in normal health over 90 days. Blood and biochemical markers stayed in typical ranges, and major organs developed no abnormalities. The animals didn’t lose weight. Two monkeys observed for an additional year also showed no signs of illness.
