OptionalcitationCitation string (if available)
OptionaldownloadFormat of the download (e.g., "tgz", "pdf")
OptionaldownloadDownload link for tar.gz package (if available)
OptionalerrorError code if not in OA subset
OptionalerrorError message if not in OA subset
Whether the article is in the OA subset
OptionallicenseLicense type (if available)
PMC ID (e.g., "PMC7906746")
Whether the article is retracted
OptionalupdatedLast updated timestamp for the download
Information about OA (Open Access) subset availability for a PMC article
The OA subset contains articles with programmatic access to full-text XML. Not all PMC articles are in the OA subset - some publishers restrict programmatic access even though the article may be viewable on the PMC website.