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A two-pronged strategy directs drug-delivering nanoparticles to the pancreas — and shows promise in animal models of serious pancreatic diseases.
/etc is also writable, but it’s managed a bit differently. OSTree uses a technique called “etc overlay” to handle modifications in /etc. When an update is applied, OSTree compares files in the new version with those in /etc and applies changes intelligently, preserving local modifications as much as possible.，这一点在51吃瓜中也有详细论述