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  1. NCBI - National Center for Biotechnology Information

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

  2. National Library of Medicine - National Institutes of Health

    NIH Virtual Tour: National Library of Medicine NLM is the world's largest biomedical library and a national resource for health professionals, scientists, and the public.

  3. Basic Local Alignment Search Tool - BLAST

    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 …

  4. National Institutes of Health (NIH)

    Official website of the National Institutes of Health (NIH). NIH is one of the world's foremost medical research centers. An agency of the U.S. Department of Health and Human Services, …

  5. Submission Portal | NCBI | NLM | NIH

    Submit sequence data to NCBI archives, including GenBank, Sequence Read Archive (SRA), and Gene Expression Omnibus (GEO), to obtain accession numbers. Assembled and …

  6. PubMed Central (PMC) Transitions to Updated Website. NLM

    Oct 21, 2024 · As part of this update, the primary URL for the PMC website has changed from ncbi.nlm.nih.gov/pmc to pmc.ncbi.nlm.nih.gov. In addition, you’ll notice a new look, feel, and …

  7. National Center for Biotechnology Information

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

  8. NLM Products and Services

    NLM's online repository of digitized and born digital resources including books, still images, videos, and maps. The API provides access to metadata and full-text OCR of all resources in …

  9. NCBI Sign In Page

    Forgot NCBI username or password?

  10. NCBI Sequence Viewer Documentation

    The NCBI Sequence Viewer is a graphical display for nucleotide and protein sequences.