胶原蛋白或者其衍生物是一种存在于骨骼软组织中的生化物质。
Collagen (or its chemical derivatives) is exactly the kind of biochemical material that one would expect to find in association with bone tissue.
胶原蛋白或者其衍生物是一种存在于骨骼软组织中的生化物质。
Collagen (or its chemical derivatives) is exactly the kind of biochemical material that one would expect to find in association with bone tissue.
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