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Magnified histological images representing scoring criteria. Representative images demonstrate the appearance of mononuclear cells, heterophils, eosinophils, multi-nucleated giant cells (MNGs), and vasculature. Regions of immature cartilage and collagen are shown. The unique immature connective tissue is shown in three stains and is surrounded by the scaffold (S). Color images available online at www.liebertpub.com/tea
