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US07754258B2 Porcine collagen film 有权
猪胶原膜

Porcine collagen film
Abstract:
A porcine collagen film is made from an extrudable collagen gel. The porcine collagen is essentially sow collagen. The ratio of collagen to fat is usually above 10:1, for example in the range 25:1 to 50:1.
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