| http://www.w3.org/ns/prov#value | - ) made of materials such as but not limited to polycarbonate, polyethylene, teflon, calcium carbonate; b) an extracellular matrix the following materials either alone or in combination attached at various orientations on the differentiation device: human or non-human collagens, laminins, firbronectins, elastins, proteoglycans (including heparin sulfate, chondroitin sulfate; keratin sulfate); non-p
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