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21 lines
644 B
Markdown
21 lines
644 B
Markdown
# esearch
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> Perform a new Entrez search using terms in indexed fields.
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> It is part of the `edirect` package.
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> More information: <https://www.ncbi.nlm.nih.gov/books/NBK179288/>.
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- Search the pubmed database for selective serotonin reuptake inhibitor:
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`esearch -db pubmed -query "{{selective serotonin reuptake inhibitor}}"`
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- Search the protein database using a query and `regex`:
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`esearch -db {{protein}} -query {{'Escherichia*'}}`
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- Search the nucleotide database for sequences whose metadata contain insulin and rodents:
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`esearch -db nuccore -query "{{insulin [PROT] AND rodents [ORGN]}}"`
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- Display help:
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`esearch {{[-h|-help]}}`
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