NLM is the world's largest biomedical library and a national resource for health professionals, scientists, and the public.

The National Center for Biotechnology Information advances science and health by providing access to biomedical and genomic information.

Jul 21, 2025 · The Basic Local Alignment Search Tool (BLAST) finds regions of local similarity between sequences. The program compares nucleotide or protein sequences to sequence databases and …

Search, link, and download sequences programatically using NCBI e-utilities. The ASN.1 and flatfile formats are available at NCBI's anonymous FTP server: ftp://ftp.ncbi.nlm.nih.gov/ncbi-asn1 and …

Jan 21, 2025 · Acquiring, organizing, preserving, and providing free online access to scholarly biomedical literature from around the world. (NNLM).

Oct 21, 2024 · The next step in the modernization of PMC As previously announced, NLM’s NCBI transitioned to an updated PubMed Central (PMC) website, representing the next step in ongoing …

Mar 28, 2024 · The National Center for Biotechnology Information (NCBI) is part of the United States National Library of Medicine (NLM), a branch of the National Institutes of Health (NIH).

Feb 11, 2026 · To learn more about combining the base URL, utility name, and parameters to create an E-utilites URL, please see the “How does E-utilities work?” page of our Insider’s Guide Overview.

Feb 11, 2026 · The URL asks the NCBI server for information and returns it in a specific format. The information that you get, and the format that it’s in, depends on how you construct the URL.

Feb 5, 2024 · MEDLINE is the National Library of Medicine's (NLM) premier bibliographic database that contains references to journal articles in life sciences, with a concentration on biomedicine.