Nano-bubbles and particles have been used since a long time to diagnose diseases and enhance the quality of ultrasound analysis (contrast agents). You can also link an antibody on their surface to target them against a particular protein or reveal a zone of interest (e.g. a tumor revealed by a specific biomarker). Nano-bubbles are even use to destroy adjacent tissue on purpose (sonoporation).Usually such particles are constructed via a mix of lipids and have a very short life time in the blood stream. I wonder how they're going to keep them alive in the blood stream for what seems to be a very long time and their design regarding toxicity.
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