Fig. 4From: Literature information in PubChem: associations between PubChem records and scientific articlesThe literature section of the Compound Summary page (DocSum) for CID 5288826 (morphine). Clicking the “Literature” section in the Table of Contents allows users to jump to the literature section, which consists of two subsections: depositor-provided and NLM-curated PubMed citationsBack to article page