If a non-MeSH term is entered, the MeSH Browser will check against the MeSH Mappings and display the associated MeSH term. Citation Matcher A revamped Citation Matcher is now available from PubMed's sidebar menu. In addition, synonyms for subheadings now map e.g., treatment maps to therapy. Also, the Pub. Date limit pull-down menu has been renamed to Entrez Date limit.
Users can easily limit retrieval by date of entry using one of the date ranges listed on that menu.
The Entrez Date field is also used for searching on other Entrez databases. This new update searches using 1998 MeSH and includes 1998 class maintained citations. MeSH terms are automatically exploded. The latter example turns off the explosion in both parts, searching for only the one subheading therapy attached directly to only the one MeSH term hypertension. More precise retrieval results from searching on the grant acronym, e.g., LM for NLM-sponsored grants, rather than the institute mnemonic, e.g., NLM, because of the occurrence of the mnemonic in the street or email portion of the address.