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Collagen is classified into a number of structurally and genetically distinct types. We use the nomenclature proposed by Bornstein and Traub.
C 2457 (OTTO) Collagen, from bovine achilles tendon powder Cas no 9007-34-5 - used as cell culture substratum, adhesion. It is also used as an attachment factor for primary cultures of epithelioid cells.