Skip to Content
California State University, Long Beach
CSULB Library
Print this pageAdd this page to your favoritesSelect a font sizeSelect a small fontSelect a medium fontSelect a large font
 

PubMed

About PubMed

Click here for PubMed.

Scope

PubMed was developed by the National Center for Biotechnology Information (NCBI) at the National Library of Medicine (NLM) to be a search tool for retrieving molecular biology data and literature citations and linking to full-text journals at participating publishers' Web sites.

Coverage

PubMed provides access to bibliographic information, which is drawn primarily from MEDLINE, OLDMEDLINE, In Process Citations, as well as, Publisher-Supplied Citations. MEDLINE dates back to the mid-1960’s and OLDMEDLINE from 1951-1965.

Searching Hints

  • Databases on the black menu bar at the top are links to other NCBI resources
  • Click on the Help link on the blue left sidebar or here for the direct link to Help
  • PubMed Basics are also available in a pdf file
  • PubMed's My NCBI feature explained in a pdf file

Boolean Operators

Boolean operators AND, OR, NOT must be in upper case.

Use these between your search terms to define what you want in your results.

  • AND - This limits your results to articles that contain BOTH of your search terms.
  • OR - This expands your results to include articles that contain EITHER of your search terms.
  • NOT - This limits your results to articles that contain your first term BUT NOT your second. 

Truncation

The symbol for truncation in PubMed is the asterisk ( * ).  Using this symbol at the end of a search term will look for all varying endings of that word. For example:

bacteri* will find bacteria, bacteriology, bacterium, etc.

Journal Information

Abbreviations

The Journals Database can be searched for the complete journal title using the MEDLINE/PubMed journal title abbreviation.

Full Text

PubMed currently provides links to Web-based journals. User registration, a subscription fee, or some other type of fee may be required to access the full text article. If this happens, go to COAST and type in the journal name to see if the Library has a print subscription or electronic/online access to the volume and issue that you need.

PubMed can also be searched for citations that include a link to a free full-text article by combining (AND) your topic with - free full text[sb]. For example:

Myocardial infarction AND free full text[sb]

NOTE: This does not contain links to all free full text articles available on the web. It only contains those that are supplied by current LinkOut providers.

Deep Blue and PubMed LinkOut: Researchers who find articles by University of Michigan (UM) authors in PubMed can now directly-and for
free-link to the full text using Deep Blue, UM's digital repository, via PubMed's LinkOut feature. Deep Blue is an online archive that preserves
and provides access to UM intellectual and creative work. It is the first institutional repository to provide such links.

Related Articles

Limits are NOT in effect when you use a Related Articles link. After linking on Related Articles, although the box next to Limits may be checked, there is no yellow bar at the top displaying the Limits in effect.

You can, however, refine the list of Related Articles using PubMed's History feature. In History, you will see that the Related Articles retrieval is represented as "Link to PubMed from (PMID of document)". Use this Search number in a search.  For example:

#3 AND english[la]  english language articles
#14 AND 1999:2003[dp]  articles published between 1999 and 2003

Keep in mind that the list you get with a Related Articles link is displayed in ranked order from most to least relevant.  Refining the list removes the ranked order and may remove citations that are most relevant.


 If you are having problems with PubMed timing out or seeing the message,"Warning: Page has Expired," try enabling HTTP1.1 compression in the browser. See July 22, 2005 NLM Technical Bulletin article for more details.

Back to top

 

Content maintained by Eileen Wakiji