|
| Entrez | PubMed | Nucleotide | Protein | Genome | Structure | OMIM | PMC | Journals | Books |
EInfo provides field names, index term counts, last update, and available links for each Entrez database.
Utility parameters may be case sensitive; therefore, use lower case characters in all parameters except for WebEnv.
This base URL includes a list of all Entrez databases: http://eutils.ncbi.nlm.nih.gov/entrez/eutils/einfo.fcgi?
db=pubmed
Example:
For specific information about
PubMed:
http://eutils.ncbi.nlm.nih.gov/entrez/eutils/einfo.fcgi?db=pubmed
Tool: A string with no internal spaces that identifies the resource that is using Entrez links (e.g., tool=flybase). This argument is used to help NCBI provide better service to third parties generating Entrez queries from programs. As with any query system, it is sometimes possible to ask the same question different ways, with different effects on performance. NCBI requests that developers sending batch requests include a constant 'tool' argument for all requests using the utilities.
tool=E-mail Address: If you choose to provide an email address, we will use it to contact you if there are problems with your queries or if we are changing software interfaces that might specifically affect your requests. If you choose not to include an email address, we cannot provide specific help to you, but you can still sign up for the utilities-announce mailing list to receive general announcements.
email=