The content of the Biolookup Service's underlying database is broken into several pieces:
The names dataframe has three columns: prefixes, identifiers, and names.
The species dataframe has three columns: prefixes, identifiers, and species denoted with NCBI taxonomy identifiers.
The definitions dataframe has three columns: prefixes, identifiers, and text descriptions.
The alternative identifiers dataframe has three columns: prefixes, identifiers, and alternative identifiers.
The synonyms dataframe has three columns: prefixes, identifiers, and synonyms.
The cross-references dataframe has five columns: prefixes, identifiers, xref prefix, xref identifier, and
source.
The cross-references dataframe has six columns: prefixes, identifiers, relation prefix, relation identifier,
target prefix, and target identifier.