PubTator3 Get Annotations

Extract biomedical entity annotations from PubMed articles using NCBI PubTator3. Given one or more PubMed IDs (PMIDs), returns text-mined entities including genes, diseases, chemicals, species, mutations, and cell lines with their normalized identifiers (NCBI Gene ID, MeSH, NCBI Taxonomy, etc.) and text positions. Useful for extracting structured biomedical knowledge from literature. Provide PMIDs as a comma-separated string.