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PubMed is among the suite of databases and tools serving all levels of biomedical research at the National Library of Medicine.
MeSH is short for Medical Subject Headings, the thesaurus of headings and subheadings used in indexing journal articles in PubMed.
MyNCBI is a tool for customizing your PubMed display, saving and sharing collections, and setting up alerts..
National Library of Medicine (U.S.) is a branch of the National Center for Biotechnology Information (NCBI).