An official website of the United States government
The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you're on a federal government site.
The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.
Wikipedia says that structured content refers to information that’s been broken down and classified using metadata. It can also refer to information that’s been classified using XML or other standard or proprietary forms of metadata. The National Institutes of Health’s National Cancer Institute (NIH/NCI) move to structured
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