Available Data Sources. Select one or more data sources to query:
Fetch Sequence(s)
If you know the GI/accession number of the sequence(s) you want to retrieve, use the Fetch Sequence Records tool. Retrieved records will display on the Extracts page.
Query Form. Select a search field and enter a search term.
Press Add Search Line to combine search terms with AND, OR, AND NOT. Query examples.
To search through all of a data source's text for the words "heat shock factor" (select NCBI Nucleotide Databases)
All Text = heat shock factor
To search for records with a match for the organism Gallus Gallus and a match for the definition "cdh19" (select Nucleotide under NCBI Nucleotide Databases)
Click Add Search Line. In the search line that appears, select AND.
Species = Gallus Gallus
AND Definition = cdh19
Use wildcard searches to broaden a search. To do this, type at least three letters of the word followed by an asterisk. For example:
Definition = myb*
Would find myb, myb3, myb12, mybst1, and so on.