Here are some key definitions to help you keep things straight.
The NIH Manuscript Submission (NIHMS) system allows you to submit an electronic version of your peer-reviewed final manuscript for inclusion in PubMed Central.
Once submitted, your article will receive an NIHMSID # for tracking purposes.
NIH Public Access Policy:
Requirement to submit the final, peer-reviewed manuscripts of NIH-funded research to PubMed Central (PMC).
Open Access (OA):
Literature that is digital, online, free of charge, and free of most copyright and licensing restrictions.
PubMed Central (PMC)
NLM's digital, open access archive of full-text, peer-reviewed journal articles.
Unique identifier: PMCID
Database of biomedical journal citations, abstracts and links to selected full text articles, including those in PubMed Central.
Unique identifier: PMID
Final Peer-Reviewed Manuscript
Author’s final manuscript accepted for journal publication after peer-review:
Final Published Article
Journal’s formatted, authoritative copy of the paper as published: