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Patent Pending Another application that takes advantage of the extraordinary photostability of quantum dot probes is the real-time tracking of molecules and cells over extended periods of time.[33] Antibodies, streptavidin,[34] peptides,[35] DNA,[36] nucleic acid aptamers,[37] or small-molecule ligands [16] can be used to target quantum dots to specific proteins on cells. Researchers were able to observe quantum dots in lymph nodes of mice for more than 4 months.
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