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Hematoxylin and eosin staining images showing the morphology of chondrocytes cultured in vitro with 0 μM (control), 5 μM (E-1), 10 μM (E-2) and 20 μM (E-3) epigallocatechin-3-gallate for 6 days. Cell seeding density, 2×104/ml; original magnification, ×100; scale bar = 200 μm.
