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New home for NIH Extramural Nexus content!
We plan on refreshing and rereleasing our older, popular content and migrating historical blog posts over the next few months. To access past posts in the meantime, please explore the archive.
We plan on refreshing and rereleasing our older, popular content and migrating historical blog posts over the next few months. To access past posts in the meantime, please explore the archive.
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2026
Learn Your Letters (of Reference or Support)
Get an overview of reference letters and letters of support: when to use them, who writes them, and what key information you should include for reviewers and NIH staff.