On January 9, 2015 NLM unique identifiers (UIs) were added to linking fields in most serial records where NLM has a bibliographic record for the related title.
NCBI is happy to announce the addition of a citation exporter feature to PMC (PubMed Central).
A new PubMed search option "hasdatabanklist" has been created to retrieve citations that carry a value in the Secondary Source ID [SI] field regardless of what the specific value(s) may be.
The NLM LiverTox is a free Web site providing up-to-date, comprehensive,and unbiased information about drug-induced liver injury caused by prescription and nonprescription drugs, herbals, and dietary supplements.
The National Library of Medicine (NLM) Alternatives to Animal Testing (ALTBIB) portal provides access to PubMed/MEDLINE citations relevant to alternatives to the use of live vertebrates in biomedical research and testing.