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Search Tag [ab] Discontinued in PubMed®

Search Tag [ab] Discontinued in PubMed. NLM Tech Bull. 2006 Jan-Feb;(348):b1.

February 17, 2006 [posted]
February 28, 2006 [Editor's Note]

[Editor's Note: This search tag was discontinued in PubMed on February 28, 2006.]

Although not documented, the [ab] search tag is an alias for a Text Word search. There is no "abstract only" search option in PubMed®. To prevent confusion, we will soon discontinue supporting the [ab] search tag in PubMed searches. To search titles and abstracts (plus additional fields), use [tw] or [text word]. To search only the Title and Abstract fields, use [tiab] or [title/abstract]. Please see the PubMed Help Search Field Descriptions and Tags for information about search tags. Users are reminded that terms entered without search tags will be searched in appropriate fields based on PubMed's Automatic Term Mapping feature.