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Related Citations
Calculated set of PubMed citations closely related to the selected article(s) retrieved using a word weight algorithm. Related articles are displayed in ranked order from most to least relevant, with the “linked from” citation displayed first.
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BioSystems
Pathways and biological systems (BioSystems) that cite the current articles. Citations are from the BioSystems source databases (KEGG and BioCyc).
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Compound
PubChem chemical compound records that cite the current articles. These references are taken from those provided on submitted PubChem chemical substance records. Multiple substance records may contribute to the PubChem compound record.
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Gene
Gene records that cite the current articles. Citations in Gene are added manually by NCBI or imported from outside public resources.
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Gene (GeneRIF)
Gene records that have the current articles as Reference into Function citations (GeneRIFs). NLM staff reviewing the literature while indexing MEDLINE add GeneRIFs manually.
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HomoloGene
HomoloGene clusters of homologous genes and sequences that cite the current articles. These are references on the Gene and sequence records in the HomoloGene entry.
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Nucleotide
Primary database (GenBank) nucleotide records reported in the current articles as well as Reference Sequences (RefSeqs) that include the articles as references.
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Nucleotide (RefSeq)
NCBI nucleotide Reference Sequences (RefSeqs) that are cited in the current articles, included in the corresponding Gene Reference into Function, or that include the PubMed articles as references.
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Nucleotide (Weighted)
Nucleotide records associated with the current articles through the Gene database. These are the related sequences on the Gene record that are added manually by NCBI.
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Protein (RefSeq)
NCBI protein Reference Sequences (RefSeqs) that are cited in the current articles, included in the corresponding Gene Reference into Function, or that include the PubMed articles as references.
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Protein (Weighted)
Protein records associated with the current articles through related Gene database records. These are the related sequences on the Gene record that are added manually by NCBI.
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Substance
PubChem chemical substance records that cite the current articles. These references are taken from those provided on submitted PubChem chemical substance records.
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Substance (MeSH Keyword)
PubChem chemical substance (submitted) records that are classified under the same Medical Subject Headings (MeSH) controlled vocabulary as the current articles.
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Taxonomy via GenBank
Taxonomy records associated with the current articles through taxonomic information on related molecular database records (Nucleotide, Protein, Gene, SNP, Structure).
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UniGene
UniGene clusters of expressed sequences that are associated with the current articles through references on the clustered sequence records and related Gene records.
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Protein
Protein translation features of primary database (GenBank) nucleotide records reported in the current articles as well as Reference Sequences (RefSeqs) that include the articles as references.
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GEO Profiles
Gene Expression Omnibus (GEO) Profiles of molecular abundance data. The current articles are references on the Gene record associated with the GEO profile.
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Cited in PMC
Full-text articles in the PubMed Central Database that cite the current articles.