Text Words [TW]

Terms that are qualified with the Text Word [tw] field tag will be searched in the following fields:

• Title
• Abstract
• MeSH headings and Subheadings (includes single words and phrases)
• Other Terms field
• Chemical Names of Substances
• Secondary Source Identifier, which identifies a secondary source that supplies information, e.g., other data sources, databanks and accession numbers of molecular sequences (e.g., GenBank; ClinicalTrials.gov – beginning in July 2005)
• Personal Name as Subject

Truncation Symbol

Truncation can be used with qualified terms. For more information about Truncation, see Truncation explanations.

• Example: breath*[tw]

Other Terms [OT]

• The Other Terms field contains largely non-MeSH subject terms.
• For OLDMEDLINE citations, this field contains the original index terms. These terms are not updated.
• The OT field is searchable with the Text Word and Other Term search tags.
  

  Example: tuberculin test [ot]