GET /efetch.fcgi

Web environment string from a previous ESearch, EPost or ELink call

NCBI API key for higher rate limits

Data content for genomes (0=blob, 1=bioseq, 2=bioseqset, 3=nuc-prot, 4=pub-set)

Constraints: {'enum': [0, 1, 2, 3, 4]}

Database containing the UIDs

Constraints: {'enum': ['pubmed', 'protein', 'nuccore', 'ipg', 'nucleotide', 'structure', 'genome', 'annotinfo', 'assembly', 'bioproject', 'biosample', 'blastdbinfo', 'books', 'cdd', 'clinvar', 'gap', 'gapplus', 'grasp', 'dbvar', 'gene', 'gds', 'geoprofiles', 'medgen', 'mesh', 'nlmcatalog', 'omim', 'orgtrack', 'pmc', 'proteinclusters', 'pcassay', 'protfam', 'pccompound', 'pcsubstance', 'seqannot', 'snp', 'sra', 'taxonomy', 'biocollections', 'gtr']}

UID list (comma-delimited). Either id or query_key/WebEnv must be provided.

Query key from a previous ESearch, EPost or ELink call

Number of records to retrieve (max varies by database)

Retrieval mode. Common values: 'text', 'xml', 'asn.1', 'json'

Constraints: {'enum': ['text', 'xml', 'asn.1', 'json', 'html']}

Sequential number of the first record to retrieve

Retrieval type. Varies by database (e.g., 'fasta', 'gb', 'abstract', 'medline')

Constraints: {'enum': ['fasta', 'gb', 'gbwithparts', 'gp', 'abstract', 'medline', 'xml', 'json', 'uilist', 'docsum', 'full', 'report']}

First sequence base to retrieve

Last sequence base to retrieve

Strand of DNA sequence to retrieve (1=plus, 2=minus)

Constraints: {'enum': [1, 2]}