| http://www.w3.org/ns/prov#value | - The gelatine-based sponge or collagen-based sponge material is preferentially comprised of at least 50% gelatine or collagen, respectively, such as at least 60%, such as at least 70%, typically at least 75%, preferably at least 80%, more preferably at least 85%, such as at least 90%, suitably at least 95%, most preferably selected from at least 96%, 97%, 98%, 99% gelatine or collagen, respectively
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