Literature
PubMed
PubMed® comprises more than 37 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
DiscoverWHR: Centralizing NIH’s Investments in Women’s Health Research
With DiscoverWHR—a new resource from the NIH Office of Research on Women’s Health (ORWH) and NLM—users now have easy access to NIH-funded research on the important topic of women’s health research. Explore studies, grants, clinical trials, and more on topics like menopause, PCOS, and autoimmune diseases.
Advancing a Whole-Person Approach to Women’s Health Research
So many women—myself included—have benefitted from significant medical breakthroughs over the past 60 years. As a breast cancer survivor, I’ve been fortunate to have access to excellent care. And the evidence that guided that care came directly from NIH-funded research over the past five decades. From the development of the HPV vaccine to prevent cervical cancer, to the use of statins to reduce heart disease and stroke, to effective approaches to maintaining bone health after menopause—NIH research has led to numerous breakthroughs that improve the health and well-being of women and people assigned female at birth (referred to hereafter as women). However, we know that women across the country are searching for answers to improve their health. They're trying to manage flare-ups from autoimmune diseases. They're dealing with chronic pain. They're coping with postpartum depression. For these experiences and more, we still have much work to do.
Salivary Enzyme Behind Our Carb Cravings May Have Unexpectedly Ancient History
Digestion involves much more than just your stomach. The digestive process that fuels your body begins in your mouth each time you take a bite of food and chew. An enzyme in your saliva, called amylase, then starts to break down complex carbohydrates—or starches found in many fruits, vegetables, and grains—into simpler sugars to give you their sweet flavor followed by a burst of energy. Amylase is the reason we’re so good at turning starch into calories, but it isn’t the same for everyone. There’s plenty of genetic variation in the number of salivary amylase genes (AMY1) our cells carry and, therefore, in how much of this essential starch-busting enzyme people have. Studies have suggested a link between changes in amylase gene copy numbers over time and both the rise of agriculture and starch-heavy diets. Now a study in Science, supported in part by NIH, suggests that extra copies of AMY1 are not only connected to our ability to effectively digest carbs, but also may be more ancient than previously known, arising even before modern humans split from Neanderthals and long before the advent of farming.