Skip to Main Content
It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
Click to enlarge image
Use the search bar at the top of the PubMed home screen. Combine key concepts in one search box. You can add search field tags (such as [au] for author); combine or limit terms with Boolean operators (AND, OR, and NOT); use quotations to define phrases; and truncate (*) terms to broaden your search.
- Choose specific terms that are closely related to your research topic, including terms you might use when discussing your topic with a colleague such as jargon, synonyms, and abbreviations.
- PubMed searches are not case sensitive.
- Use Boolean operators to limit, broaden, or eliminate terms from your search:
- AND limits search results, finding articles with both terms
- OR broadens results, finding articles with either term
- NOT eliminates terms from the results, finding articles with one term but not the other
- Use truncation to broaden your search field by placing an asterisk (*) after the root of your term. This allows PubMed to search across all possible terms with that root (e.g. bacter* returns bacteria, bacterial, bacterium, etc.). Be aware that truncation turns off automatic term mapping that searches for Medical Subject Headings (MeSH).