Providing free and open access to scientific literature and data
Do you love biomolecular data as much as we do? Join NCBI in celebrating International Love Data Week, February 9-13, 2026! Love Data Week is an international celebration of data, which takes place every year during the week of Valentine’s Day. This year’s theme is “Where’s the Data?” and encourages us to think about the journey of data, from collection to storage and preservation.
NCBI is one of the largest sources of free and open biomolecular data on the web with over 300 TB retrieved every day. There’s something for everyone to love!
Find the data YOU love!
You can find and access the following data through our website, APIs, command line tools, and FTP site. Easily analyze, compare, and download data using resources from the NCBI Toolkit, such as RefSeq, NCBI Datasets, and other sequence analysis tools—including BLAST® and the Comparative Genome Viewer (CGV), which are part of the NIH Comparative Genomics Resource (CGR).
Literature Data
Medical and scientific abstracts, full-text articles, books, and reports, as well as supporting resources for cataloging and indexing the materials.
Clinical and Human Genetic Data
Clinical data, small & large human genomic variants, and genotype & phenotype data.
Biological Sequence Data
Genomic and expressed nucleotide sequence data and sequence-based gene expression data.
Chemical Data
Submitted and curated information on drugs and other chemical entities including chemical structures, identifiers, chemical and physical properties, biological activities, patents, health, safety, toxicity data as well as assays on bioactivity.
Protein & Structure Data
Protein sequence translations of GenBank and RefSeq and structural and functional information.
Pathogen Genomic Epidemiology Data
Rapid access to data from outbreaks to aid public health surveillance efforts.
Contribute YOUR Data!
Do you have data you want to submit to NCBI? Visit the Submission Portal for more information!
Questions?
Feel free to contact our help desk at info@ncbi.nlm.nih.gov if you have questions or would like to provide feedback.