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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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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 (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.