| rentrez-package | rentrez |
| entrez_email | Set global variables |
| entrez_fetch | Download data from NCBI databases |
| entrez_global_query | See how many hits there are for a given term across all NCBI Entrez databses |
| entrez_link | Get links to datasets related to a unique ID from an NCBI database |
| entrez_post | Post IDs to Eutils for later use |
| entrez_search | Search the NCBI databases using EUtils |
| entrez_summary | Get summaries of objects in NCBI datasets from a unique ID |
| parse_pubmed_xml | Summarise an XML record from pubmed. |
| rentrez | rentrez |