Letter L (1997–Present)
	LactMed LactMed Added to TOXNET. 2006 Mar-Apr:e1 Updated. 2007 Mar-Apr:e1 Language Azerbaijani. 2004 Jan-Feb:e1 Bosnian. 2004 Jan-Feb:e1 Changes for mul and slv. 2005 May-Jun:e1 Croatian. 2003 Sep-Oct:e1 Esperanto. 2004 Jan-Feb:e1 Malayalam. 2004 Jan-Feb:e1 Scottish Gaelic. 2004 Jan-Feb:e1 Serbian. 2003 Sep-Oct:e1 Vietnamese. 2004 Jan-Feb:e1 Last Revision Date (LR) Field Expanded to Eight Digits. 1997 Sep-Oct:1 Lasker, Mary Materials Added to Profiles in Science. 2007 May-Jun:e1 Lederberg, Joshua Lederberg Papers Expanded on Profiles in Scienc. 2005 May-Jun:e1 Materials Added to Profiles in Science. 1999 Mar-Apr:e1 Letters Pagination For. 2002 Nov-Dec:e1 Indexing Policy. 2002 Nov-Dec:e1 Leukemia - Lymphoma Changes Changes for 2008. 2007 Nov-Dec:e11 License Agreement to Lease NLM Data Documentation Available on NLM Web Site. 1999 Sep-Oct:e1 Fees. 1999 Nov-Dec:e4 Information for Current and Potential Licensees. 1999 Nov-Dec:e1 New Data License Agreement. 2008 Nov-Dec:e4 New Format. 1998 May-Jun:e1; 1999 Nov-Dec:e4 Non-US Research Only. 2002 Jan-Feb:e4 ; 2008 Nov-Dec:e4 Surcharge Eliminated. 1997 Jul-Aug:3 Research Use. 2005 Nov-Dec:e1 Web-based License Request System Available. 2008 Nov-Dec:e4 XML. 1999 Nov-Dec:e4 Licensee MEDLINE®/PubMed® Baseline Repository. 2005 Nov-Dec:e1 Limits NLM Gateway Redesigned. 2008 Jan-Feb:e9 Searching the NLM Catalog Quick Tour. 2006 Mar-Apr:e1 Limits Feature Abstracts Only. 1999 Nov-Dec:e1 Age Groups. 2002 Nov-Dec:e6; 2008 Nov-Dec:e15 Limits Page Updated. 2006 Mar-Apr:e2; 2006 Nov-Dec:e5 PubMed Hands On. 2000 Jul-Aug:e1 LinkOut. 2003 Jan-Feb:e8 Added to NLM Gateway. 2003 Nov-Dec:e8 Choosing a Display Name for the Filter Tab in PubMed for Library Holdings. 2005 Sep-Oct:e1 Clinical Queries, Icon Displayed. 2005 Jan-Feb:e1 Enhanced Display. 2004 Sep-Oct:e9 Help Manual Available. 2006 Jan-Feb:e3 Homepage with Tabbed Format. 2006 Jan-Feb:e3 Library Icon Position. 2007 Mar-Apr:e8 Library Submission Utility Provides Icon. 2003 Jan-Feb:e8 LinkOut Library Icons on Free Full Text Citations. 2005 Jan-Feb:e8 Links to Hazardous Substances Data Bank (HSDB) Chemicals. 2003 Nov-Dec:e1; 2004 Mar-Apr:e1 New URL for Homepage. 2007 Sep-Oct:e9 OpenURL-based server. 2004 Sep-Oct:e3 Preferences. 2001 May-Jun:e8 Print Holdings. 2002 Jul-Aug:e4 SERHOLD Interface. 2002 Jul-Aug:e4 SERHOLD Sign-up Daily Limits Lifted. 2003 Jan-Feb:e8 Single Citation Matcher, Icon Displayed. 2005 Jan-Feb:e1 Tutorial. 2003 Jan-Feb:e8 Upload Holdings Feature Added. 2003 Nov-Dec:e1 LinkOut Libraries. 2006 Jan-Feb:e3 Links Creating a Link to Entrez Databases. 2007 May-Jun:e9 Display Altered. 2002 Nov-Dec:e7 To Cited Articles in PMC. 2005 Jul-Aug:e2 To Evidence-Based Medicine Resources. 2002 May-Jun:e2 To LocusLink. 2002 Sep-Oct:e6 Pull-down Menu. 2002 Jul-Aug:e6; 2007 Jan-Feb:e1 List of Journals Indexed for MEDLINE (LJI) Available. 2005 Mar-Apr:e1; 2007 Mar-Apr:e1 2008 Mar-Apr:e1 Print Version Available from GPO. 2007 May-Jun:e1 Updates. 2007 Jan-Feb:e1 List of Journals Indexed in Index Medicus (LJI) Available. 1999 Jan-Feb:e1 List of Serials Indexed for Online Users (LSI) Available. 2007 Mar-Apr:e1; 2008 Mar-Apr:e1 Available in XML. 2004 Mar-Apr:e1; 2005 Mar-Apr:e1; 2007 Mar-Apr:e1 Order Information. 1997 Jan-Feb:3; 1998 Jan-Feb:e1; 1999 Jan-Feb:e1 Listservs. 2008 Mar-Apr:e4 List of NLM Listservs. 2006 May-Jun:e5 Literature Databases Page. 2007 May-Jun:e1 Literature Selection Technical Review Committee. 2007 Jan-Feb:e1 Journals Recently Accepted by NLM for Inclusion in MEDLINE Web page. 2007 Jan-Feb:e1 Loansome Doc American Hospital Association Journal Citations Available. 1999 May-Jun:e4 Enhancements in DOCLINE 2.8. 2006 Jul-Aug:e1 Free Full Text Available. 2004 May-Jun:e6 Links to DOCLINE. 2004 May-Jun:e6 NLM Gateway Hands On. 2002 Jan-Feb:e5 Redesigned. 2005 May-Fun:e9 Updates. 2003 Jul-Aug:e1 Local Document Delivery System PubMed's Document Delivery Service (DDS). 2004 Sep-Oct:e3 LocatorPlus Accession Numbers for Non-print Materials (AV) Appear in Holdings Display. 2004 Nov-Dec:e5 Addition of Fixed Field Coding for Electronic Resources. 2004 Nov-Dec:e11 Artificially Reconstructed Subject Strings Request for Comments on Discontinuing. 2005 May-Jun:e8 Response to Request for Comments on Discontinuing. 2005 Sep-Oct:e6 Authority Records. 2003 Jan-Feb:e4 Available on Web. 1999 Mar-Apr:e2 Cessation of Print Abridged Index Medicus. 2004 Nov-Dec:e11 Cessation of Print Index Medicus. 2004 Nov-Dec:e11 Conversion From Wade-Giles to Pinyin Romanization. 2001 May-Jun:e1; 2002 Nov-Dec:e8 Display Changes List. 2007 Jan-Feb:e3 More Like This Tab Number of Records Table of Contents Tab Herbs. MeSH Heading. 2002 Jan-Feb:e3 Images from the History of Medicine Added. 2008 Mar-Apr:e5 Indexing Information Displayed in LocatorPlus Records. 2001 Mar-Apr:e6 ISBN. 2007 Jan-Feb:e3 Journals Database Links to Records in LocatorPlus. 2002 Sep-Oct:e4 Keyword Searching. 2007 Jan-Feb:e3 Monographic Citations Added. 2002 Jul-Aug:e3 Monographic Citations From MEDLINE. 2001 Jul-Aug:e4 Monographic Citations From POPLINE. 2001 Jul-Aug:e4 Name as Subject Search. 2007 Jan-Feb:e3 New Version. 2001 May-Jun:e4 Non-Roman Characters Display and Searching. 2007 Jan-Feb:e3 Publication Types. 2003 Nov-Dec:e9 Replaces Locator. 1999 Mar-Apr:e2 Serials Cataloging. 2002 Jan-Feb:e9 Series. 2008 Nov-Dec:e22 Standardization or Deletion of List of Journals Indexed-Subject Headings. 2004 Nov-Dec:e11 Summary Notes. 2008 Nov-Dec:e22 Table of Contents. 2008 Nov-Dec:e22 Tutorial Available on Web. 1999 Mar-Apr:e2 New Versions Available. 2004 Nov-Dec:e1 Truncation. 2007 Jan-Feb:e3 Unicode. 2007 Jan-Feb:e3 Using Updated MeSH. 2001 Nov-Dec:e12; 2003 Jan-Feb:e1; 2003 Nov-Dec:e9; 2004 Nov-Dec:e11; 2005 Nov-Dec:e15; 2006 Nov-Dec:e4; 2008 Nov-Dec:e22 Vernacular, Non-Roman Characters. 2007 Jan-Feb:e3 Wildcards. 2007 Jan-Feb:e3 LocusLink Gene Indexing. 2002 Sep-Oct:e6 Link to MEDLINE. 2002 Sep-Oct:e6 Organisms Added. 2002 Sep-Oct:e6; 2003 Mar-Apr:e1; 2003 Nov-Dec:e1; 2004 Jan-Feb:e1; 2005 Mar-Apr:e6 Replaced by Entrez Gene. 2005 Mar-Apr:e6 LSTRC see Literature Selection Technical Review Committee Luria, Salvador E. Materials Added to Profiles in Science. 2005 Sep-Oct:e1

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Last updated: 29 December 2008