When the field "Organism" is left blank, all organisms in the database will be searched. Otherwise only the organism specified by the Taxonomy ID will be searched.
Examples of Taxonomy IDs are:
| Organism | Taxonomy ID |
| Arabidopsis thaliana | 3702 |
| Escherichia coli | 562 |
| Saccharomyces cerevisiae | 4932 |
| Drosophila melanogaster | 7227 |
| Mus musculus | 10090 |
| Homo sapiens | 9606 |
Multiple Taxonomy IDs should be separated by space.
For more information, please go to The NCBI Taxonomy Homepage