Literature
PubMed
PubMed® comprises more than 33 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.
Featured Bookshelf titles
Drug Therapy for Early Rheumatoid Arthritis
A Systematic Review Update
Literature 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
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
News
Research news
Study Reveals a Cell-Eat-Cell World
From normal vertebrate development to tumor cell cannibalism, cell-in-cell events occur in many different contexts across the tree of life
Researchers Bioengin-Ear Tissue Scaffolds to Human Scale
A new approach to sculpting human-like ears merges 3D printing, xenografts, and tissue engineering.
Do cats experience grief? New research suggests they might
Researchers from Oakland University surveyed hundreds of cat caregivers and found that cats exhibited behaviors associated with grief after a fellow cat or dog in the household died.
Recent blog posts
Study Suggests New Experiences Can Refresh Memories of Past Events, with Implications for Understanding PTSD
Your memories of life experiences are encoded in collections of neurons in the brain that were active at the time the event took place. Later, those same patterns of neural activity are replayed in your mind to help stabilize your memories of past events. But new research suggests those memories aren’t fixed. An NIH-supported study in male mice reveals how an older memory can be “refreshed” and altered by association with newer events. The findings, reported in Nature, show that a memory of a recent negative event can become linked to the memory of a neutral event that took place days earlier, changing the way it’s remembered. This provides important insight into what we know about how the brain updates and reorganizes memories based on new information. These findings could also have implications for our understanding of neurobiological processes that might occur in the brain in memory-related mental health conditions like post-traumatic stress disorder (PTSD), when people feel stress or fear even in situations that present no danger.
AGP Files Will No Longer be Accepted for Genome Submissions
Effective March 2025 Do you submit genomes to NCBI’s GenBank? Beginning March 2025, GenBank will no longer accept AGP files for genome submissions. Historically, AGP files were submitted along with contigs as necessary information for constructing assemblies. However, thanks to technology improvements, more and more whole genome shotgun (WGS) sequences submitted to NCBI are gapped … Continue reading AGP Files Will No Longer be Accepted for Genome Submissions
Evolving with Science: Introducing NLM’s New Division of Intramural Research
NLM is proud to introduce the new Division of Intramural Research (previously the Intramural Research Program)! This reorganization marks a significant milestone in advancing our research efforts in computational health and biology, with a particular focus on AI and machine learning.