NAME

       elink - look up related NCBI Entrez records

SYNOPSIS

       elink   (edirect -link)   [-help]   [-related]  [-target dbname]  [-name name]  [-db name]
       [-id ID(s)] [-cmd command] [-mode ref] [-holding provider] [-batch] [-label name]

DESCRIPTION

       elink follows links between Entrez databases,  either  extending  an  existing  edirect(1)
       pipeline or honoring explicit -db and -id options.

OPTIONS

   Destination Database
       -related
              Look up neighbors in the same database.

       -target dbname
              Follow links to another database.

       -name name
              Follow an explicit link name such as pubmed_protein_refseq.

   Direct Record Selection
       -db name
              Entrez database name for immediate lookups.

       -id ID(s)
              Unique identifier(s) for immediate lookups.

   Advanced Control
       -cmd command
              Command type (returns eLinkResult XML):
              neighbor
                     Neighbors or links
              neighbor_score
                     Neighbors with computed similarity scores
              acheck All links available
              ncheck Existence of neighbors
              lcheck Existence of external links (LinkOuts)
              llinks Non-library LinkOut providers
              llinkslib
                     All LinkOut providers
              prlinks
                     Primary LinkOut provider, or URL for single UID with -mode ref.

       -mode ref
              Use LinkOut provider's web site.

       -holding provider
              Name of LinkOut provider.

   Batch Processing
       -batch Bypass Entrez history mechanism.

   Miscellaneous Arguments
       -help  Print usage information.

       -label name
              Alias for query step.

SEE ALSO

       edirect(1), einfo(1), epost(1).