1. NATIONAL LIBRARY OF MEDICINE PubMed Central Brooke Dine National Library of Medicine Medical Library Association Conference May 2004

2. NATIONAL LIBRARY OF MEDICINE What is PubMed Central? PubMed Central (PMC) is the U.S. National Library of Medicine's free digital archive of biomedical and life sciences journal literature. PMC serves as a… a permanent archive a platform for enriched linking, analysis, and use of research reports and data one of many sources of full-text articles linked to PubMed/MEDLINE citations

3. NATIONAL LIBRARY OF MEDICINE Access to PMC Content Free access to full-text articles and supporting data A journal may delay free access to its content Research articles are generally free in a year or less Non-research articles may have a delay of 6-24 months depending on the journal Full-text searching of current and back issue content via PMC Entrez Citations for articles included in PubMed Fully integrated with other Entrez databases – sequence data, taxonomy, books, etc.

4. NATIONAL LIBRARY OF MEDICINE PMC Participation & Usage Currently, PMC includes: 150 life sciences journals over 300,000 articles, letters, etc. 700,000 unique users monthly 1.75 million full-text retrievals per month Total retrieval is nearly 4 million pages per month

5. NATIONAL LIBRARY OF MEDICINE PMC Home Page

6. NATIONAL LIBRARY OF MEDICINE PMC Journal List – Full List

7. NATIONAL LIBRARY OF MEDICINE PMC Journal List – Tabbed List

8. NATIONAL LIBRARY OF MEDICINE PMC and Open Access Deposit of Open Access (OA) content is subject to normal PMC standards and requirements OA source files can be downloaded by anyone: PMC-OAI service for full-text XML FTP service to download complete article packet – XML, images, PDF and supplemental data files OA simplifies distribution of content to collaborating archives Opens door for data mining and creation of innovative products by others Open Access may apply to an entire journal and its content or at the article-level when authors have retained the copyright

9. NATIONAL LIBRARY OF MEDICINE Open Access Journals in PMC Open Access Journals in PMC: Amphibian and Reptile Conservation BioMed Central Journals PLoS Biology Journals in PMC which offer authors the option to publish open access articles: Nucleic Acids Research PNAS In October 2003, PMC began accepting individual open access articles from journals that do not participate in PMC on a routine basis. Science

10. NATIONAL LIBRARY OF MEDICINE Open Access & Copyright

11. NATIONAL LIBRARY OF MEDICINE Open Access & Copyright

12. NATIONAL LIBRARY OF MEDICINE PubLink with Open Access

13. NATIONAL LIBRARY OF MEDICINE Open Access TOC

14. NATIONAL LIBRARY OF MEDICINE Open Access Articles

15. NATIONAL LIBRARY OF MEDICINE Ahead of Print Articles

16. NATIONAL LIBRARY OF MEDICINE Back Issue Digitization in PMC Create a complete digital archive of PMC journals Bring the collection to today’s “if not online, it doesn’t exist” user Cover-to-cover digital copy of everything up to where journal began producing electronic copy Publisher gets free, unencumbered digital copy First complete archive, Bulletin of the Medical Library Association (1911), released in November 2003

17. NATIONAL LIBRARY OF MEDICINE What’s Being Digitized? 50 journals that deposit current issues including: American Society for Microbiology (10 journals) BMJ Publishing Group (BMJ and specialist journals) Bulletin of the Medical Library Association Journal of Clinical Investigation Molecular Biology of the Cell Nucleic Acids Research Plant Physiology PNAS: Proceedings of the National Academy of Sciences of the USA

18. NATIONAL LIBRARY OF MEDICINE Archive Table of Contents (TOC)

19. NATIONAL LIBRARY OF MEDICINE Digitized Issue TOC

20. NATIONAL LIBRARY OF MEDICINE Digitized Article – Summary

21. NATIONAL LIBRARY OF MEDICINE Digitized Article – Page Browse

22. NATIONAL LIBRARY OF MEDICINE Back Issue Digitized Images

23. NATIONAL LIBRARY OF MEDICINE Back Issue Digitized Images

24. NATIONAL LIBRARY OF MEDICINE Back Issue Digitized Images

25. NATIONAL LIBRARY OF MEDICINE Entrez Entrez retrieval system supports access to PubMed, online books, the sequence databases, a taxonomy database, and more. Users can now search the full text of all SGML- or XML- based content deposited in PMC, including articles for which the full text is viewable only at the journal’s site. Back issue content is also searchable via PMC Entrez.

26. NATIONAL LIBRARY OF MEDICINE PMC Entrez – Journal Limits

27. NATIONAL LIBRARY OF MEDICINE PMC Entrez Limits

28. NATIONAL LIBRARY OF MEDICINE PMC Entrez Results

29. NATIONAL LIBRARY OF MEDICINE Linking Options within PMC Articles within PMC offer various linking options across articles, issues, and journals. These include: Commentaries Cited In Referenced Articles Corrections

30. NATIONAL LIBRARY OF MEDICINE Linking: Commentary Articles

31. NATIONAL LIBRARY OF MEDICINE Linking: Commentary Articles

32. NATIONAL LIBRARY OF MEDICINE Cited In

33. NATIONAL LIBRARY OF MEDICINE Cited In TOC

34. NATIONAL LIBRARY OF MEDICINE Referenced Articles

35. NATIONAL LIBRARY OF MEDICINE Linking: Corrected Articles

36. NATIONAL LIBRARY OF MEDICINE Linking: Original Article

37. NATIONAL LIBRARY OF MEDICINE PMC PubMed Central Site: http://www.pubmedcentral.nih.gov Questions about PMC: pubmedcentral@nih.gov