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Extracellular matrix synthesis of the biopolymer patches explanted after 3 months. PDO is the polymer showing the most similarities with the native rat IVC in terms of collagen (a) and glycosaminoglycans (b) density, followed by PHBVV (e, f). Extracellular matrix in contact with the PU material appears less well-organized (c, d). Scale bar: 50 μm. Color images available online at www.liebertpub.com/tea
