Explode and Focus in PubMed

The MeSH Database is where you control Explode and Focus in PubMed.

1. Select MeSH Database from PubMed Services on the blue scan column on the left.
2. Type in your subject heading.
3. On the next screen, click on the subject heading (not the check box)

Below the definition or scope note of the subject heading, you'll see the list of subheadings that you can choose from. Further down you'll see:



Check Restrict Search to Major Topic headings only to focus your search.

PubMed automatically explodes the subject heading so check Do Not Explode this term to turn off the explode feature.