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https://acrabstracts.org/abstract/pentagalloyl-glucose-pgg-exhibits-anti-rheumatic-activity-in-human-ra-synovial-fibroblasts-and-rat-adjuvant-induced-arthritis/ Pentagalloyl Glucose (PGG) Exhibits Anti-Rheumatic Activity in Human RA Synovial Fibroblasts and... Oct 29, 2015 - Background/Purpose: Pentagalloyl glucose (PGG) is a natural polyphenolic and water-soluble gallotannin that exhibits anti-cancer and anti-inflammatory...