New in PMC RSS Feed

February 5, 2015 — Full text now available for OA subset articles, in plain text format

In order to facilitate text and data mining for articles in the Open Access Subset, we are now providing plain text files for those articles on our FTP site. These files contain the full text of the article, extracted either from the XML source files, or (for those articles that don't have XML) the PDF files. Users are directly and solely responsible for compliance with copyright restrictions and are expected to adhere to the terms and conditions defined by the copyright holder (see the PMC Copyright Notice).

These text files are bundled in gzipped archives. Note that these files are quite large (each greater than one gigabyte). They are available for download as:

These files are updated every week, on Saturday.

For more information, see the Bulk Packages of OA Articles section of our FTP Service page.

November 18, 2014 — Citation Exporter Feature Now Available

PMC is happy to announce the addition of a citation exporter feature. This feature makes it easy to retrieve either styled citations that you can copy/paste into your manuscripts, or to download them into a format compatible with your bibliographic reference manager software.

When viewing an Entrez search results page, each result summary will now include a "Citation" link. When, clicked, this will open a pop-up window that you can use to easily copy/paste citations formatted in one of three popular styles: AMA (American Medical Association), MLA (Modern Language Association), or APA (American Psychological Association). In addition, the box has links at the bottom that can be used to download the citation information in one of three machine-readable formats, which most bibliographic reference management software can import.

Citation exporter feature screenshot

The same citation box can also be invoked from an individual article, either in classic view (with the "Citation" link among the list of formats) or the PubReader view, by clicking on the citation information just below the article title in the banner.

These human-readable styled citations, and machine-readable formats, will be available through a public API, and we will be providing more details about that in another announcement, on the pmc-utils-announce mailing list. Please subscribe to that list if you are interested.

March 28, 2014 — PMC Advisory Committee Meeting to be Held in June

This year's PMC Advisory Committee meeting will be held on Tuesday, June 10. The meeting will take place in the NLM Board room starting at 9:30 am. Stay tuned for further details.

February 24, 2014 — Three Million Articles are Now in PMC!!

As of February 21, 2014, PMC became home to three million articles! As listed on our home page, the content has been provided in part by 1441 full participation journals, 277 NIH Portfolio journals and 2470 selective deposit journals. For related information on PMC milestones, see these announcements from 2007 and 2010, respectively.

November 18, 2013 — PMC Releases New ID Converter

PMC has just released an upgrade to our ID converter, now dubbed the PMCID - PMID -Manuscript ID - DOI Converter. This utility allows you to start with the unique identifier for an article that is in PMC, and find additional unique identifiers that may apply to the article. Improvements include support for DOIs, auto-detection of the ID type based on its format, and enhanced output. It also provides output in any of several different formats: HTML, XML, JSON, or CSV. This tool uses an underlying web service, that is also publicly available for those needing programmatic access to this data. See the ID Converter API documentation.

November 18, 2013 — New Version of NCBI Handbook is Released

The NCBI Handbook, 2nd Edition was released on November 14 and is now searchable in Bookshelf. The handbook features an updated section on PMC, which includes information on article retrieval, data processing, and PMC tools and utilities. Other PMC-related literature sections that have been updated include Bookshelf, the NIH Manuscript Submission System and the NLM DTD.

September 4, 2013 — New Version of PubReader is Released

PMC has recently released an updated version of its PubReader view. The new version (1.2) includes a "search this page" feature that allows you to find specific terms within the article. The latest source code is also available from the GitHub repository.

August 15, 2013 — A New PMC Mailing List and RSS Feed

PMC has recently replaced the PMC-News mailing list and its accompanying RSS feed with a new PMC-Announce list and a new RSS feed. Please note that the older list and feed have now been retired. To subscribe to the new announcement list, see To see the new RSS feed, update your news reader to subscribe to

August 5, 2013 — Search for Open Access Articles by License

You can now search for Open Access articles that have certain types of licenses, by using special filters in both PMC and PubMed. These filters are based on license information that is provided to PMC by publishers and other content providers, as encoded by machine-readable identifiers in the source XML of each article. For more information, see our updated Open Access Subset page.

July 17, 2013 — JATS-Con 2013 Program is Now Available

JATS-Con is a conference for users of the Journal Article Tag Suite, that is, users of any of the "NLM DTDs" or NISO Z39.96. JATS-Con will take place on the NIH campus in Bethesda, Maryland on October 22 and 23, 2013.

The full program is now available, as are proceedings from previous years.

There is no charge for the conference; however, space is limited so registration is required.

You may also sign up for a pre-conference tutorial on October 21, 2013. Details are on the Tutorial Registration page.

April 22, 2013 — Keep Better Track of PMC Features

PMC has created a new email list for announcements of new or updated tools and utilities to help you keep better track of improvements to the archive. To find out more information about the list, or to subscribe, please visit PMC-Utils-Announce.

April 19, 2013 — New OA Web Service for PMC

PMC is pleased to announce the new OA web service, designed to allow tool developers an easier way to find content in the PMC open access subset. Until now, it has not been easy for outside users to determine which articles in the subset are new or have been updated recently. Our new OA web service addresses this need. It provides a simple API to allow you to query the subset, to find PDF or tgz (tarred-gzipped) format files, either by article ID, or by date/time ranges. More information, along with examples, is available from the documentation page, at OA Web Service. Your feedback is welcome; please send it to the PMC Help Desk, at

February 1, 2013 — KoreaMed Synapse Adds PubReader as a Display Option

KoreaMed Synapse, a digital archive and reference linking platform of Korean medical journals, is now using NCBI’s new PubReader presentation style to display their full-text journal articles. KoreaMed’s database of 122 journals now includes a blue ‘PubReader’ icon for each full-text article. NCBI launched PubReader in December 2012 as a convenient new way to view full-text articles in PubMed Central on desktops as well as tablets and mobile devices. In tandem with the launch, NCBI made the code used to create PubReader freely available on GitHub.

February 1, 2013 — PMC Advisory Committee Appoints New Members

As of February 1, 2013, the following new members have been appointed to serve on the PMC National Advisory Committee: Ms. Sharon Terry of the Genetic Alliance; Dr. C. Victor Jongneel of the University of Illinois at Urbana-Champaign; Dr. Bevin Engelward of the Massachusetts Institute of Technology; Dr. Randall Morse of the Wadsworth Center; and Dr. Adelita Cantu of the University of Texas. For more information, see PMC National Advisory Committee.

December 11, 2012 — PubReader – A New Presentation Style for PMC

NCBI has developed a new web presentation style called PubReader, which offers you an easier way to use your Web browser to read the articles in PMC. Designed particularly for enhancing readability and navigation on tablet and other small screen devices, PubReader can also be used on desktops and laptops and from multiple web browsers. For more information on PubReader, see the article in the November-December issue of the NLM Technical Bulletin.

November 5, 2012 — UKPMC Rebranded as Europe PMC

With the addition of several European sponsoring agencies, including the European Research Council, UKPMC was renamed Europe PMC as of November 1, 2012. Europe PMC is an outgrowth and expansion of UKPMC, which was first launched in January 2007 with sponsorship from the Wellcome Trust and several other funders of biomedical research in the UK. Europe PMC receives all of its final published articles directly from the U.S. PMC archive. It also accepts and processes author manuscripts of journal articles funded by the Europe PMC sponsoring agencies and makes them available to U.S. PMC and PMC Canada. For more information, see PMC International.

August 22, 2012 — JATS Becomes NISO Standard

The Journal Archiving Tag Suite(JATS), known formerly as the NLM DTD, has now been officially adopted as an American National Standards Institute (ANSI)/ National Information Standards Organization (NISO) standard. According to the press release from NISO, "JATS provides a common XML format in which publishers and archives can exchange journal content by preserving the intellectual content of journals independent of the form in which that content was originally delivered." For more information, see NISO Publishes Journal Article Tag Suite (JATS) Standard.

July 13, 2012 — A Facelift for PMC

PMC has recently undergone another redesign to improve the look and feel and functionality of the site, featuring more white space, cleaner lines and enhanced navigation on its article, issue, and journal archive pages. For more information, see the article in the July-August 2012 issue of the NLM Technical Bulletin.

July 12, 2012 — New Version of PMC Help is Released

The PMC user's guide, PMC Help has been updated to include new and improved information on navigating the site as well as descriptions and instructions on using the new search functions, such as Limits and Advanced Search Builder. Further updates will also be forthcoming.

March 26, 2012 — JATS-Con Dates Announced for 2012!

The third annual Journal Article Tag Suite Conference (JATS-Con) will be held on October 16 and 17, 2012 on the NIH Campus in Bethesda, Maryland. JATS-Con is a conference for users of the NISO Z39.96 Journal Article Tag Suite: that is, users of any of the NLM DTDs. JATS-Con is a peer-reviewed conference with a broad range of content on the Tag Suite from the technical to publishing theory — and the latest news on the Tag Suite. For more information, see JATS-Con.

February 29, 2012 — PMC Advisory Committee Appoints New Members

The following new members have been appointed to serve on the PMC National Advisory Committee: Martha Bedard, Dean of Libraries at the University of New Mexico; and Lorraine Haricombe, Dean of Libraries at the University of Kansas and a member of SPARC's board. The next meeting of the committee is scheduled for June 19, 2012. For more information, see PMC National Advisory Committee.

July 12, 2011 — JATS-Con is Coming!

The second annual Journal Article Tag Suite Conference (JATS-Con) will be held on September 26 and 27, 2011, at the Natcher Conference Center on the NIH Campus in Bethesda, Maryland. The 2011 conference will feature a host of presenters who will discuss topics ranging from Best Practices to PMC Tagging Guidelines. For more information on the conference and the program, see JATS-Con.

June 20, 2011 — The PMC 10th Anniversary Video is now on YouTube!

A video celebrating PMC's first decade is now available for viewing on the NCBI YouTube Channel. The PMC 10th Anniversary Video can also be found on the regular YouTube site.

June 14, 2011 — PMC Advisory Committee to Meet at NLM

The PMC Advisory Committee will hold its annual meeting at the National Library of Medicine on Friday, June 17, 2011 from 9:30 am to 3 pm. Four new committee members will be joining the group, see New Members Appointed to PMC Advisory Committee. Presentations will include discussions relating to the NIH Public Access policy and a viewing of the PMC 10th Anniversary video. For more information, see PMC National Advisory Committee.

May 26, 2011 — A Brand New Look for PMC!

PMC has gotten a facelift-- or more accurately, an interface-lift! The home page, search page and other PMC informational pages have all undergone an overhaul, in order to provide users with easier navigation, enhanced features, and a look and feel that is more consistent with other recently updated NCBI sites, such as PubMed and Bookshelf. Additional new features and updates will be coming soon. For more information on navigating the new site, see the article in the July-August issue of the NLM Technical Bulletin.

February 28, 2011 — Ten Years After: PMC Milestone Featured in NLM in Focus!

PMC marked its 10th anniversary in 2010 with a celebratory event at its annual Advisory Committee meeting, held at the National Library of Medicine last June. This milestone event was recently featured in the February 17th edition of NLM In Focus, in an article NLM Milestones: The Hits Just Keep on Coming. For more information on the ten years of PMC, see the article in the May-June issue of the NLM Technical Bulletin.

N L M in focus

February 17, 2011 — New Members Appointed to PMC Advisory Committee

Four new members have been appointed to serve on the PMC National Advisory Committee: Philip Bourne, of the University of California, San Diego; Sophia Colamarino, an independent consultant in San Francisco; Paul Courant, of the University of Michigan; and Patricia Thibodeau, of Duke University. Each member will serve a 4-year term. The next meeting of the committee is scheduled for Friday, June 17, 2011. For more information on the committee, see PMC National Advisory Committee.

September 14, 2010 — A New Look and Feel for PMC's Public Access Page

The Public Access & PMC page has been redesigned for greater clarity and usability. In addition to including a list of the FAQs at the top, the new page features a table illustrating all the ways to find various reference numbers for an article: the PMID, NIHMSID, and most important, the PMCID, which must be used to demonstrate compliance in terms of the NIH Public Access Policy.

June 25, 2010 — PMC Hits Two Million Mark!!

It's official—PMC has just become home to two million articles! The record-breaking article, which came from the American Journal of Medical Genetics Part B: Neuropsychiatric Genetics, became publicly available in the PMC archive on June 23. This new PMC milestone has occurred almost three years to the day since PMC reached its last one: the one-million article mark in June 2007. See also: PubMed Central Hits One Million Article Mark.

June 17, 2010 — First-Ever Journal Article Tag Suite Conference (JATS-Con) to be Held in November 2010

PMC is pleased to announce the first of what we hope will be an annual series of conferences for users of the Journal Article Tag Suite, that is, for users of any of the “NLM DTDs”. The Journal Article Tag Suite Conference (JATS-Con) is a peer-reviewed conference that will feature a broad range of content on the Tag Suite—from the technical components to publishing theory—as well as the latest news on the Tag Suite. The conference will be hosted by the National Center for Biotechnology Information (NCBI) at the National Library of Medicine on the NIH campus in Bethesda, Maryland on November 1 & 2, 2010.

For more information on the conference, see

JATS-Con Screenshot

Note: There is no charge for the conference; however, space is limited so preregistration is required.

April 29, 2010 — PMC Canada's Manuscript Submission System Goes Live!

The PMC Canada manuscript submission system was released on April 28, 2010. The system will enable researchers funded by the Canadian Institutes of Health Research to deposit their peer-reviewed research publications, in compliance with CIHR's Policy on Access to Research Outputs.

February 24, 2010 — New Members for PMC Advisory Committee

Four new members have been appointed to serve on the PMC National Advisory Committee: Mike Rossner of Rockefeller University Press, Jan Fassler of the University of Iowa, Ivy Anderson of the California Digital Library, and Delores Meglio from the Knovel Corporation. Each member will serve a 4-year term. The next meeting of the committee is scheduled for June 4, 2010. For more information on the committee, see PMC National Advisory Committee.

November 16, 2009 — New URLs in PMC

PMC recently redesigned its URL format to allow for easier usability as well as consistency across the NCBI site. To implement this change, we moved the previous site,, into the NCBI domain as a sub-site. You can now access the PMC home page at

The primary advantage of the new format is to enable the PMC site to become more fully integrated with other NCBI resources. The new URLs are also more user-friendly—they no longer include technology-driven terminology, such as CGI script names and file extensions (Figure 1).

Old URL Screen Shot

Figure 1—Old URL for Journal Page with CGI Script Name

Instead, note that after the NCBI/PMC address, the URL first identifies the type of resource, e.g., the PMC journal list, with subsequent identification for a particular subset of that resource—in this case, the journal number (Figure 2).

New URL Screen Shot

Figure 2—New URL for Journal Page with Journal Number

Additionally, you will have greater flexibility in accessing particular types of material because, in a number of cases, more than one URL can be used for the same resource. In these instances, one URL is considered to be canonical, or primary; however, using any of the ancillary URLs for that resource will redirect you back to the canonical one. For example (see Figure 3), although the first URL, which represents the PMCID, is considered to be the canonical URL, you may also access the article by using other identifiers, such as the pmid, doi, or the issn-volume-issue-page (ivip).

URLs for same article Screen Shot

Figure 3—Canonical and Ancillary URLs for the Same Full-Text Article

Finally, with the roll-out of these more stable and standardized URLs, as in the table below (Figure 4), you will also find it easier to modify the web addresses in your browser. Note that the canonical URL is given first and is in bold; the ancillary URLs are listed below it.

URL Table Display Screen Shot

Figure 4—Table Display of all New URLs

Although the new URLs are firmly in place, please also note that we haven't completely discarded the old to bring in the new. If you do use an old URL, it's not a problem. Your browser will be redirected to the new location.

October 28, 2009 — PMC Now Offers a “Preview” Table of Contents for Embargoed Issues

For any journal issue that has at least one open access or early access article, PMC is now displaying the table of contents (TOC) in advance of the whole issue becoming available. Not to worry, though—only those articles specified for early release are immediately viewable in PMC. As consistent with the terms of access in the journal agreement, the other articles will only become available on their specified release date, as shown in the TOC below.

Plant Phys TOC Screen Shot

The journal's accessiblity, as indicated on the PMC Journal list also has not changed; for example, Plant Physiology's embargo period is still 12 months. What has changed is that the issues with “preview” TOCs now additionally appear on the journal's archive page. Publishers and others can rest assured, however, that no access terms for any journal have been changed with the unveiling of this new format.

October 21, 2009 — PMC Canada is Launched!

The newest addition to the PMC International effort, PubMed Central Canada has now been made public. Stay tuned for the launch of PMC Canada's manuscript submission system later this year.

pmc canada screen shot

October 1, 2009 — PMC Adds New Page on Public Access

A new page, Public Access & PMC, has now been added to the About PMC section of the PubMed Central site. “Public Access & PMC” provides information on the relationship between PMC and the NIH Public Access policy, including the difference between the NIH Public Access journal list and PMC journal list. In particular, authors and publishers should find this new site to be a useful resource.

July 24, 2009 — New Search Function Released

You can now find embargoed articles and their corresponding PMCIDs through a recently released search option in the PMC Entrez database. Using the “Limits” tab, click in the field, “Show both free and embargoed articles” and refine your search by journal, author, date, article type, and/or tag term, as needed. Once you’re on the summary page, click on the “embargoed” tab at the top to find the articles in this category. You can then find the PMCID and date of availability at the bottom of the article citation, as indicated in the example below. Note: The PMC search option only includes articles with an initial embargo of up to 12 months. Articles with an embargo greater than 12 months are not compliant with the NIH Public Access Policy and will appear in search results only when the full text is free in PMC. For more information, see the article in the September-October issue of the NLM Technical Bulletin.

embargoed article

July 6, 2009 — PMC Canada to Start in Fall 2009

Canada is soon expected to join the international effort to provide access to health research through the PMC International network of digital archives. PMC Canada is the result of a three-way collaborative effort by the National Library of Medicine (NLM), the Canadian Institutes of Health Research (CIHR), and the National Research Council's Canada Institute for Scientific and Technical Information (NRC-CISTI). Similar to UK PubMed Central, PMC Canada will include most of the health and life sciences literature available through the U.S. PMC. PMC Canada will also include research resulting from funding through the Canadian Institutes of Health Research (CIHR). Components of the new repository will include a bilingual interface as well a manuscript submission system for CIHR researchers. A press release from the Canadian Institutes of Health Research is also available at:

Canadian Institutes of Health Research

June 16, 2009 — PMC Advisory Committee Meets at NLM

The most recent meeting of the PMC Advisory Committee was held at the National Library of Medicine on June 15, 2009. The committee meets at least once a year and its members are appointed by the NIH Director from the biomedical information communities and the general public. Dr. Gary Ward, of the Department of Microbiology & Molecular Genetics at the University of Vermont, has been appointed to serve as Chair of the Committee through January 2011.

May 19, 2009 — New Version of PubMed Central® Journal List Released

PMC released a new and improved journal list on March 31, 2009, after a comprehensive redesign for greater clarity and organization.

The new design not only combines the full-list and tabbed-list views of the previous version but also includes some new or updated features to provide users with a greater overview of the total PMC archive. Looking at this new list, you will find:

  1. An Expanded View of PMC journals that includes NIH Portfolio
  2. Special Collections
  3. A New “Participation Level” Journal Category
  4. Hide/Show Display Option for Predecessor Titles
  5. Article and Journal Search Feature

For more information, see the complete article in the May-June issue of the NLM Technical Bulletin:

new journal list

Last updated: Wed, 25 Feb 2015