Literature
PubMed
PubMed® comprises more than 35 million citations for biomedical literature from MEDLINE, life science journals, and online books. Citations may include links to full text content from PubMed Central and publisher web sites.
Example searches
Search for titles, citations, identifiers and moreLiterature databases
Books and reports
Ontology used for PubMed indexing
Books, journals and more in the NLM Collections
Scientific and medical abstracts/citations
Full-text journal articles
Data
Genes
Gene sequences and annotations used as references for the study of orthologs structure, expression, and evolution
Collected information about gene loci
Functional genomics studies
Gene expression and molecular abundance profiles
Homologous genes sets for selected organisms
Sequence sets from phylogenetic and population studies
Proteins
Protein sequences, 3-D structures, and tools for the study of functional protein domains and active sites
Conserved protein domains
Protein sequences grouped by identity
Protein sequences
Models representing homologous proteins with a common function
Experimentally-determined biomolecular structures
BLAST
A tool to find regions of similarity between biological sequences
Search nucleotide sequence databases
Search protein sequence databases
Search protein databases using a translated nucleotide query
Search translated nucleotide databases using a protein query
Find primers specific to your PCR template
Genomes
Genome sequence assemblies, large-scale functional genomics data, and source biological samples
Genome assembly information
Museum, herbaria, and other biorepository collections
Biological projects providing data to NCBI
Descriptions of biological source materials
Genome sequencing projects by organism
DNA and RNA sequences
High-throughput sequence reads
Taxonomic classification and nomenclature
Clinical
Heritable DNA variations, associations with human pathologies, and clinical diagnostics and treatments
Privately and publicly funded clinical studies conducted around the world
Human variations of clinical significance
Genotype/phenotype interaction studies
Short genetic variations
Genome structural variation studies
Genetic testing registry
Medical genetics literature and links
Online mendelian inheritance in man
PubChem
Repository of chemical information, molecular pathways, and tools for bioactivity screening
Bioactivity screening studies
Chemical information with structures, information and links
Molecular pathways with links to genes, proteins and chemicals
Deposited substance and chemical information
COVID-19 resources
Coronavirus Disease 2019 (COVID-19) Treatment Guidelines (National Institutes of Health)
Use our new Betacoronavirus database for SARS‑CoV‑2 genome sequence analysis
A curated literature hub for the latest scientific information on COVID-19
News
Research news
Lab Leak or Not? How Politics Shaped the Battle Over Covid’s Origin
A lab leak was once dismissed by many as a conspiracy theory. But the idea is gaining traction, even as evidence builds that the virus emerged from a market.
The Secret Behind Japan’s Delicious Strawberries: Kerosene
The growing season has become completely reversed thanks to kerosene-burning greenhouses and the big prices paid for the earliest, best berries.
Recent blog posts
New Way to View and Download Related Genes
Effective June 2023, the HomoloGene records will redirect to the Datasets Gene Table Do you use HomoloGene to view and download data? You can now access updated homology data from NCBI Datasets through the Datasets Gene Table with connections to NCBI Orthologs. Go directly from a HomoloGene record to the Datasets Gene Table that will … Continue reading New Way to View and Download Related Genes
Read About NCBI Resources in 2023 Nucleic Acids Research Database Issue
The 2023 Nucleic Acids Research Database Issue features papers from NCBI staff on GenBank, Conserved Domain Database, and more. The citations are available in PubMed with full-text available in PubMed Central (PMC). To read an article, click on the PMCID number listed below. Database resources of the National Center for Biotechnology Information in 2023 PMCID: PMC9825438 NCBI … Continue reading Read About NCBI Resources in 2023 Nucleic Acids Research Database Issue
Data Science Tools Will Speed Rare Disease Solutions
More than 10,000 rare diseases affect up to 400 million people worldwide, and those with rare diseases struggle for about six years on average before they receive an accurate diagnosis. But data-driven innovations are unlocking answers about rare diseases—as well as more common diseases—faster than ever before.