Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.
Example of PubMed expansion of the truncated search term “malignan*” using the wild card asterisk. This is section is found on the right side of the search result page. Note the scroll bar to the right indicating many additional variations not shown in the window and the link to see more terms used
