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PMC (PubMed Central open access)

Full-text open-access articles from PMC. Is our copy current, and how much of it is there.

Discovery ledger by upstream day

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Backed by pmc_articles, pmc_article_chunks and the pmc_files discovery ledger, filled by pmc-sync from the daily inventory of s3://pmc-oa-opendata and drained by pmc-process. Chunk totals are planner estimates, not counts.