PMC (PubMed Central)
A free digital archive of biomedical and life sciences journal literature maintained by the National Institutes of Health (NIH). PMC IDs (e.g., PMC12345678) provide permanent access to full-text articles.
Why it matters
PMC provides free access to full-text articles that might otherwise be behind paywalls, making it an invaluable resource for students and researchers without institutional subscriptions. Many funding agencies, including the NIH, require that research they fund be deposited in PMC, ensuring public access to publicly funded science.
How to use
Search PMC at ncbi.nlm.nih.gov/pmc to find free full-text articles. You can enter a PMCID (e.g., PMC12345678) directly to navigate to a specific article. When citing, use the article's DOI or standard journal citation rather than the PMCID, unless your citation style specifically requires it. PMC also provides export options for citation managers like Zotero and Mendeley.
In academic writing
Students in biomedical, health science, and life science programs use PMC daily to access research literature. PMC is particularly valuable during systematic reviews, where full-text access is required for screening articles. Understanding the difference between PubMed (which indexes abstracts) and PMC (which hosts full texts) is important for efficient literature searching.
Common mistakes
- •Confusing PMC with PubMed — PubMed is a search engine that indexes article metadata, while PMC is a full-text archive. Not all PubMed articles are in PMC.
- •Using the PMCID in place of a DOI in the citation when the style requires a DOI.
- •Not realizing that some PMC articles are embargoed and may not be available in full text until after a delay period.
Example
PMC12345678
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