History

Your PubMed Search History is available on the Advanced Search page. This page shows your search strategies and search results. These search statement numbers can be combined with each other or with new search terms using Boolean logic.

• The History section displays the search, the time of the search, the number of citations in your search results, and a search statement numbers menu for combining searches.
  
  
• History can hold a maximum of 100 search statements. Once that number is reached, PubMed will remove the oldest search to add the most current.
  
  
• Search History is automatically lost after 8 hours of inactivity.
  
  
• PubMed will move a search statement number to the top of the History if the new search is the same as a previous search.
  
  
• Use the More History button at the bottom of the Search History section to view all of your search history for the session.
  
  
• Use the Clear History button to remove all searches from the History. Use the Delete option from the search statement number menu to delete an individual search from History.

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