This XML file does not appear to have any style information associated with it. The document tree is shown below. <ul> <li id="resources"> <ul id="resources-submenu"> <li> <a href="/guide/all/">All Resources</a> </li> <li> <a href="#chemicals-bioassays">Chemicals & Bioassays</a> <ul class="actual-resources-submenu chemicals-bioassays"> <li> <a href="/biosystems/" title=" Database that groups biomedical literature, small molecules, and sequence data in terms of biological relationships. ">BioSystems</a> </li> <li> <a href="/pcassay" title=" Contributed bioactivity data for PubChem Substances ">PubChem BioAssay</a> </li> <li> <a href="/pccompound" title=" Unique, standardized chemical structures ">PubChem Compound</a> </li> <li> <a href="https://pubchem.ncbi.nlm.nih.gov/search/search.cgi" title=" Searches PubChem Compound by chemical structure ">PubChem Structure Search</a> </li> <li> <a href="/pcsubstance" title=" Provides information on the biological activities of small molecules. ">PubChem Substance</a> </li> <li> <a href="/guide/chemicals-bioassays/">All Chemicals & Bioassays Resources...</a> </li> </ul> </li> <li> <a href="#dna-rna">DNA & RNA</a> <ul class="actual-resources-submenu dna-rna"> <li> <a href="https://blast.ncbi.nlm.nih.gov/Blast.cgi" title=" Tool for finding local regions of sequence similarity ">BLAST (Basic Local Alignment Search Tool)</a> </li> <li> <a href="https://blast.ncbi.nlm.nih.gov/Blast.cgi?CMD=Web&PAGE_TYPE=BlastDocs&DOC_TYPE=Download" title=" BLAST programs for a local computer ">BLAST (Stand-alone)</a> </li> <li> <a href="/books/NBK25501/ " title=" URL application programming interface for searching, linking and downloading data within NCBI's Entrez system ">E-Utilities</a> </li> <li> <a href="/genbank/" title=" DNA and RNA sequences submitted to NCBI ">GenBank</a> </li> <li> <a href="/WebSub/?tool=genbank" title=" Web tool for simple submissions of nucleotide sequences ">GenBank: BankIt</a> </li> <li> <a href="/projects/Sequin/" title=" Software tool for complex submissions of nucleotide sequences ">GenBank: Sequin</a> </li> <li> <a href="/genbank/tbl2asn2/" title=" Command-line program for submitting sequence data ">GenBank: tbl2asn</a> </li> <li> <a href="/tools/gbench/" title=" Stand-alone application for analyzing sequence data ">Genome Workbench</a> </li> <li> <a href="/genomes/FLU/" title=" Data from the NIAID Influenza Genome Sequencing Project ">Influenza Virus</a> </li> <li> <a href="/nuccore" title=" Nucleotide sequence data in GenBank and RefSeq ">Nucleotide Database</a> </li> <li> <a href="/popset" title=" Sets of nucleotide sequences representing a population ">PopSet</a> </li> <li> <a href="/tools/primer-blast/" title=" Designs PCR primers and analyzes them for target specificity using BLAST. ">Primer-BLAST</a> </li> <li> <a href="/sutils/static/prosplign/prosplign.html" title=" Tool for aligning proteins to genomic DNA ">ProSplign</a> </li> <li> <a href="/refseq/" title=" Curated nucleotide and protein sequences produced by NCBI ">Reference Sequence (RefSeq)</a> </li> <li> <a href="/refseq/rsg/" title=" RefSeqGene reference standards for genomic sequences of well-characterized genes ">RefSeqGene</a> </li> <li> <a href="/Traces/sra/sra.cgi?" title=" Database of sequences reads from next generation sequencing technologies ">Sequence Read Archive (SRA)</a> </li> <li> <a href="/sutils/splign/" title=" Tool for aligning transcripts to genomic DNA ">Splign</a> </li> <li> <a href="/Traces/trace.cgi" title=" DNA chromatograms, base calls, and quality estimates for single-pass reads. ">Trace Archive</a> </li> <li> <a href="/guide/dna-rna/">All DNA & RNA Resources...</a> </li> </ul> </li> <li> <a href="#data-software">Data & Software</a> <ul class="actual-resources-submenu data-software"> <li> <a href="https://blast.ncbi.nlm.nih.gov/Blast.cgi" title=" Tool for finding local regions of sequence similarity ">BLAST (Basic Local Alignment Search Tool)</a> </li> <li> <a href="https://blast.ncbi.nlm.nih.gov/Blast.cgi?CMD=Web&PAGE_TYPE=BlastDocs&DOC_TYPE=Download" title=" BLAST programs for a local computer ">BLAST (Stand-alone)</a> </li> <li> <a href="/Structure/CN3D/cn3d.shtml" title=" Program for viewing 3D structures and alignments ">Cn3D</a> </li> <li> <a href="/Structure/cdd/wrpsb.cgi" title=" Locates conserved domains within a protein sequence ">Conserved Domain Search Service (CD Search)</a> </li> <li> <a href="/books/NBK25501/ " title=" URL application programming interface for searching, linking and downloading data within NCBI's Entrez system ">E-Utilities</a> </li> <li> <a href="/WebSub/?tool=genbank" title=" Web tool for simple submissions of nucleotide sequences ">GenBank: BankIt</a> </li> <li> <a href="/projects/Sequin/" title=" Software tool for complex submissions of nucleotide sequences ">GenBank: Sequin</a> </li> <li> <a href="/genbank/tbl2asn2/" title=" Command-line program for submitting sequence data ">GenBank: tbl2asn</a> </li> <li> <a href="/sutils/protmap.cgi" title=" Maps proteins from a COG/VOG back to its genome ">Genome ProtMap</a> </li> <li> <a href="/tools/gbench/" title=" Stand-alone application for analyzing sequence data ">Genome Workbench</a> </li> <li> <a href="/tools/primer-blast/" title=" Designs PCR primers and analyzes them for target specificity using BLAST. ">Primer-BLAST</a> </li> <li> <a href="/sutils/static/prosplign/prosplign.html" title=" Tool for aligning proteins to genomic DNA ">ProSplign</a> </li> <li> <a href="https://pubchem.ncbi.nlm.nih.gov/search/search.cgi" title=" Searches PubChem Compound by chemical structure ">PubChem Structure Search</a> </li> <li> <a href="/projects/SNP/" title=" The SNP database tools page provides links to the general submission guidelines and to the submission handle request. ">SNP Submission Tool</a> </li> <li> <a href="/sutils/splign/" title=" Tool for aligning transcripts to genomic DNA ">Splign</a> </li> <li> <a href="/Structure/VAST/vast.html" title=" Tool that generates 3D structural alignments ">Vector Alignment Search Tool (VAST)</a> </li> <li> <a href="/guide/data-software/">All Data & Software Resources...</a> </li> </ul> </li> <li> <a href="#domains-structures">Domains & Structures</a> <ul class="actual-resources-submenu domains-structures"> <li> <a href="/biosystems/" title=" Database that groups biomedical literature, small molecules, and sequence data in terms of biological relationships. ">BioSystems</a> </li> <li> <a href="/Structure/CN3D/cn3d.shtml" title=" Program for viewing 3D structures and alignments ">Cn3D</a> </li> <li> <a href="/cdd" title=" Database of conserved protein domains represented by multiple sequence alignments ">Conserved Domain Database (CDD)</a> </li> <li> <a href="/Structure/cdd/wrpsb.cgi" title=" Locates conserved domains within a protein sequence ">Conserved Domain Search Service (CD Search)</a> </li> <li> <a href="/structure/" title=" Database of 3D macromolecular structures derived from PDB ">Structure (Molecular Modeling Database)</a> </li> <li> <a href="/Structure/VAST/vast.html" title=" Tool that generates 3D structural alignments ">Vector Alignment Search Tool (VAST)</a> </li> <li> <a href="/guide/domains-structures/">All Domains & Structures Resources...</a> </li> </ul> </li> <li> <a href="#genes-expression">Genes & Expression</a> <ul class="actual-resources-submenu genes-expression"> <li> <a href="/biosystems/" title=" Database that groups biomedical literature, small molecules, and sequence data in terms of biological relationships. ">BioSystems</a> </li> <li> <a href="/gap" title=" Genotype/Phenotype association studies ">Database of Genotypes and Phenotypes (dbGaP)</a> </li> <li> <a href="/books/NBK25501/ " title=" URL application programming interface for searching, linking and downloading data within NCBI's Entrez system ">E-Utilities</a> </li> <li> <a href="/gene" title=" Database of gene loci and associated transcripts and proteins ">Gene</a> </li> <li> <a href="/geo/" title=" Gene Expression Omnibus (GEO) Database ">Gene Expression Omnibus (GEO) Database </a> </li> <li> <a href="/gds" title=" Curated collections of gene expression data sets ">Gene Expression Omnibus (GEO) Datasets</a> </li> <li> <a href="/geoprofiles/" title=" Database of gene expression Profiles for individual sequences ">Gene Expression Omnibus (GEO) Profiles</a> </li> <li> <a href="/tools/gbench/" title=" Stand-alone application for analyzing sequence data ">Genome Workbench</a> </li> <li> <a href="/homologene" title=" Sets of homologous eukaryotic genes ">HomoloGene</a> </li> <li> <a href="/omim" title=" Database of human genes and genetic disorders ">Online Mendelian Inheritance in Man (OMIM)</a> </li> <li> <a href="/refseq/rsg/" title=" RefSeqGene reference standards for genomic sequences of well-characterized genes ">RefSeqGene</a> </li> <li> <a href="/guide/genes-expression/">All Genes & Expression Resources...</a> </li> </ul> </li> <li> <a href="#genetics-medicine">Genetics & Medicine</a> <ul class="actual-resources-submenu genetics-medicine"> <li> <a href="/books" title=" Online biomedical books ">Bookshelf</a> </li> <li> <a href="/gap" title=" Genotype/Phenotype association studies ">Database of Genotypes and Phenotypes (dbGaP)</a> </li> <li> <a href="/gtr/" title=" Detailed information about genetic tests and labs ">Genetic Testing Registry</a> </li> <li> <a href="/genomes/FLU/" title=" Data from the NIAID Influenza Genome Sequencing Project ">Influenza Virus</a> </li> <li> <a href="/omim" title=" Database of human genes and genetic disorders ">Online Mendelian Inheritance in Man (OMIM)</a> </li> <li> <a href="/pubmed" title=" Biomedical literature abstracts ">PubMed</a> </li> <li> <a href="/pmc/" title=" Free, full-text articles ">PubMed Central (PMC)</a> </li> <li> <a href="/pubmed/clinical " title=" Directory of PubMed queries about clinical topics ">PubMed Clinical Queries</a> </li> <li> <a href="/refseq/rsg/" title=" RefSeqGene reference standards for genomic sequences of well-characterized genes ">RefSeqGene</a> </li> <li> <a href="/guide/genetics-medicine/">All Genetics & Medicine Resources...</a> </li> </ul> </li> <li> <a href="#genomes-maps">Genomes & Maps</a> <ul class="actual-resources-submenu genomes-maps"> <li> <a href="/dbvar" title=" A database of genomic structural variation ">Database of Genomic Structural Variation (dbVar)</a> </li> <li> <a href="/genbank/tbl2asn2/" title=" Command-line program for submitting sequence data ">GenBank: tbl2asn</a> </li> <li> <a href="/sites/genome" title=" Curated genomic DNA sequences ">Genome</a> </li> <li> <a href="/bioproject/" title=" Central status pages for genome sequencing projects ">Genome Project</a> </li> <li> <a href="/genome/gdv/" title="GDV is a genome browser supporting the exploration and analysis of eukaryotic RefSeq Genome assemblies. ">Genome Data Viewer (GDV)</a> </li> <li> <a href="/sutils/protmap.cgi" title=" Maps proteins from a COG/VOG back to its genome ">Genome ProtMap</a> </li> <li> <a href="/tools/gbench/" title=" Stand-alone application for analyzing sequence data ">Genome Workbench</a> </li> <li> <a href="/genomes/FLU/" title=" Data from the NIAID Influenza Genome Sequencing Project ">Influenza Virus</a> </li> <li> <a href="/nuccore" title=" Nucleotide sequence data in GenBank and RefSeq ">Nucleotide Database</a> </li> <li> <a href="/popset" title=" Sets of nucleotide sequences representing a population ">PopSet</a> </li> <li> <a href="/sutils/static/prosplign/prosplign.html" title=" Tool for aligning proteins to genomic DNA ">ProSplign</a> </li> <li> <a href="/Traces/sra/sra.cgi?" title=" Database of sequences reads from next generation sequencing technologies ">Sequence Read Archive (SRA)</a> </li> <li> <a href="/sutils/splign/" title=" Tool for aligning transcripts to genomic DNA ">Splign</a> </li> <li> <a href="/Traces/trace.cgi" title=" DNA chromatograms, base calls, and quality estimates for single-pass reads. ">Trace Archive</a> </li> <li> <a href="/guide/genomes-maps/">All Genomes & Maps Resources...</a> </li> </ul> </li> <li> <a href="#homology">Homology</a> <ul class="actual-resources-submenu homology"> <li> <a href="https://blast.ncbi.nlm.nih.gov/Blast.cgi" title=" Tool for finding local regions of sequence similarity ">BLAST (Basic Local Alignment Search Tool)</a> </li> <li> <a href="https://blast.ncbi.nlm.nih.gov/Blast.cgi?CMD=Web&PAGE_TYPE=BlastDocs&DOC_TYPE=Download" title=" BLAST programs for a local computer ">BLAST (Stand-alone)</a> </li> <li> <a href="/sutils/blink.cgi?mode=query" title=" Pre-computed reports showing proteins with similar sequences ">BLAST Link (BLink)</a> </li> <li> <a href="/cdd" title=" Database of conserved protein domains represented by multiple sequence alignments ">Conserved Domain Database (CDD)</a> </li> <li> <a href="/Structure/cdd/wrpsb.cgi" title=" Locates conserved domains within a protein sequence ">Conserved Domain Search Service (CD Search)</a> </li> <li> <a href="/sutils/protmap.cgi" title=" Maps proteins from a COG/VOG back to its genome ">Genome ProtMap</a> </li> <li> <a href="/homologene" title=" Sets of homologous eukaryotic genes ">HomoloGene</a> </li> <li> <a href="/proteinclusters" title=" Clusters of related proteins from prokaryotes and organelles ">Protein Clusters</a> </li> <li> <a href="/guide/homology/">All Homology Resources...</a> </li> </ul> </li> <li> <a href="#literature">Literature</a> <ul class="actual-resources-submenu literature"> <li> <a href="/books" title=" Online biomedical books ">Bookshelf</a> </li> <li> <a href="/books/NBK25501/ " title=" URL application programming interface for searching, linking and downloading data within NCBI's Entrez system ">E-Utilities</a> </li> <li> <a href="/nlmcatalog/journals" title=" Information on journals cited by NCBI records ">Journals in NCBI Databases</a> </li> <li> <a href="/mesh" title=" Controlled vocabulary for MEDLINE ">MeSH Database</a> </li> <li> <a href="/books/NBK143764/" title=" Introductory articles about NCBI resources ">NCBI Handbook</a> </li> <li> <a href="/books/NBK3831/" title=" Online, searchable help documentation ">NCBI Help Manual</a> </li> <li> <a href="https://ncbiinsights.ncbi.nlm.nih.gov" title=" NCBI's monthly newsletter ">NCBI News & Blog</a> </li> <li> <a href="/pubmed" title=" Biomedical literature abstracts ">PubMed</a> </li> <li> <a href="/pmc/" title=" Free, full-text articles ">PubMed Central (PMC)</a> </li> <li> <a href="/pubmed/clinical " title=" Directory of PubMed queries about clinical topics ">PubMed Clinical Queries</a> </li> <li> <a href="/guide/literature/">All Literature Resources...</a> </li> </ul> </li> <li> <a href="#proteins">Proteins</a> <ul class="actual-resources-submenu proteins"> <li> <a href="/biosystems/" title=" Database that groups biomedical literature, small molecules, and sequence data in terms of biological relationships. ">BioSystems</a> </li> <li> <a href="https://blast.ncbi.nlm.nih.gov/Blast.cgi" title=" Tool for finding local regions of sequence similarity ">BLAST (Basic Local Alignment Search Tool)</a> </li> <li> <a href="https://blast.ncbi.nlm.nih.gov/Blast.cgi?CMD=Web&PAGE_TYPE=BlastDocs&DOC_TYPE=Download" title=" BLAST programs for a local computer ">BLAST (Stand-alone)</a> </li> <li> <a href="/sutils/blink.cgi?mode=query" title=" Pre-computed reports showing proteins with similar sequences ">BLAST Link (BLink)</a> </li> <li> <a href="/cdd" title=" Database of conserved protein domains represented by multiple sequence alignments ">Conserved Domain Database (CDD)</a> </li> <li> <a href="/Structure/cdd/wrpsb.cgi" title=" Locates conserved domains within a protein sequence ">Conserved Domain Search Service (CD Search)</a> </li> <li> <a href="/books/NBK25501/ " title=" URL application programming interface for searching, linking and downloading data within NCBI's Entrez system ">E-Utilities</a> </li> <li> <a href="/sutils/static/prosplign/prosplign.html" title=" Tool for aligning proteins to genomic DNA ">ProSplign</a> </li> <li> <a href="/proteinclusters" title=" Clusters of related proteins from prokaryotes and organelles ">Protein Clusters</a> </li> <li> <a href="/protein" title=" Protein sequence data ">Protein Database</a> </li> <li> <a href="/refseq/" title=" Curated nucleotide and protein sequences produced by NCBI ">Reference Sequence (RefSeq)</a> </li> <li> <a href="/guide/proteins/">All Proteins Resources...</a> </li> </ul> </li> <li> <a href="#sequence-analysis">Sequence Analysis</a> <ul class="actual-resources-submenu sequence-analysis"> <li> <a href="https://blast.ncbi.nlm.nih.gov/Blast.cgi" title=" Tool for finding local regions of sequence similarity ">BLAST (Basic Local Alignment Search Tool)</a> </li> <li> <a href="https://blast.ncbi.nlm.nih.gov/Blast.cgi?CMD=Web&PAGE_TYPE=BlastDocs&DOC_TYPE=Download" title=" BLAST programs for a local computer ">BLAST (Stand-alone)</a> </li> <li> <a href="/sutils/blink.cgi?mode=query" title=" Pre-computed reports showing proteins with similar sequences ">BLAST Link (BLink)</a> </li> <li> <a href="/Structure/cdd/wrpsb.cgi" title=" Locates conserved domains within a protein sequence ">Conserved Domain Search Service (CD Search)</a> </li> <li> <a href="/sutils/protmap.cgi" title=" Maps proteins from a COG/VOG back to its genome ">Genome ProtMap</a> </li> <li> <a href="/tools/gbench/" title=" Stand-alone application for analyzing sequence data ">Genome Workbench</a> </li> <li> <a href="/genomes/FLU/" title=" Data from the NIAID Influenza Genome Sequencing Project ">Influenza Virus</a> </li> <li> <a href="/tools/primer-blast/" title=" Designs PCR primers and analyzes them for target specificity using BLAST. ">Primer-BLAST</a> </li> <li> <a href="/sutils/static/prosplign/prosplign.html" title=" Tool for aligning proteins to genomic DNA ">ProSplign</a> </li> <li> <a href="/sutils/splign/" title=" Tool for aligning transcripts to genomic DNA ">Splign</a> </li> <li> <a href="/guide/sequence-analysis/">All Sequence Analysis Resources...</a> </li> </ul> </li> <li> <a href="#taxonomy">Taxonomy</a> <ul class="actual-resources-submenu taxonomy"> <li> <a href="/taxonomy" title=" The NCBI taxonomy tree in Entrez ">Taxonomy</a> </li> <li> <a href="/Taxonomy/Browser/wwwtax.cgi?mode=Root" title=" Displays and links Entrez data to each taxonomic node ">Taxonomy Browser</a> </li> <li> <a href="/Taxonomy/CommonTree/wwwcmt.cgi" title=" Creates custom taxonomic trees ">Taxonomy Common Tree</a> </li> <li> <a href="/guide/taxonomy/">All Taxonomy Resources...</a> </li> </ul> </li> <li> <a href="#training-tutorials">Training & Tutorials</a> <ul class="actual-resources-submenu training-tutorials"> <li> <a href="/education/" title=" Central page providing links to tutorials and training materials ">NCBI Education Page</a> </li> <li> <a href="/books/NBK143764/" title=" Introductory articles about NCBI resources ">NCBI Handbook</a> </li> <li> <a href="/books/NBK3831/" title=" Online, searchable help documentation ">NCBI Help Manual</a> </li> <li> <a href="https://ncbiinsights.ncbi.nlm.nih.gov" title=" NCBI's monthly newsletter ">NCBI News & Blog</a> </li> <li> <a href="/guide/training-tutorials/">All Training & Tutorials Resources...</a> </li> </ul> </li> <li> <a href="#variation">Variation</a> <ul class="actual-resources-submenu variation"> <li> <a href="/dbvar" title=" A database of genomic structural variation ">Database of Genomic Structural Variation (dbVar)</a> </li> <li> <a href="/gap" title=" Genotype/Phenotype association studies ">Database of Genotypes and Phenotypes (dbGaP)</a> </li> <li> <a href="/snp" title=" Database of nucleotide sequence polymorphisms ">Database of Single Nucleotide Polymorphisms (dbSNP)</a> </li> <li> <a href="/projects/SNP/" title=" The SNP database tools page provides links to the general submission guidelines and to the submission handle request. ">SNP Submission Tool</a> </li> <li> <a href="/guide/variation/">All Variation Resources...</a> </li> </ul> </li> </ul> </li> <li id="howto"> <ul id="howto-submenu"> <li> <a href="/guide/all/#howtos">All How To</a> </li> <li> <a href="/guide/chemicals-bioassays/#howtos">Chemicals & Bioassays</a> </li> <li> <a href="/guide/dna-rna/#howtos">DNA & RNA</a> </li> <li> <a href="/guide/data-software/#howtos">Data & Software</a> </li> <li> <a href="/guide/domains-structures/#howtos">Domains & Structures</a> </li> <li> <a href="/guide/genes-expression/#howtos">Genes & Expression</a> </li> <li> <a href="/guide/genetics-medicine/#howtos">Genetics & Medicine</a> </li> <li> <a href="/guide/genomes-maps/#howtos">Genomes & Maps</a> </li> <li> <a href="/guide/homology/#howtos">Homology</a> </li> <li> <a href="/guide/literature/#howtos">Literature</a> </li> <li> <a href="/guide/proteins/#howtos">Proteins</a> </li> <li> <a href="/guide/sequence-analysis/#howtos">Sequence Analysis</a> </li> <li> <a href="/guide/taxonomy/#howtos">Taxonomy</a> </li> <li> <a href="/guide/training-tutorials/#howtos">Training & Tutorials</a> </li> <li> <a href="/guide/variation/#howtos">Variation</a> </li> </ul> </li> </ul>