It is the function "!" (AND NOT condition) as a logical operator which is used to connect keywords when you specify multiple keyword for a search in Quick search and etc.
- Search: Searching for the entry that contained "lung cancer" but not contained "Homo sapiens" in Quick search.
- How to enter: Enter the keywords with "!" on the search box like the below.
"lung cancer"!"Homo sapiens"
- Result: Displayed the entries that contained "lung cancer", but not contained "Homo sapiens".
Please refer to the HELP for more details.