The replica bone lacks the thin layer of cartilage that lines the real bone, and it also lacks a blood supply, so it begins to starve as soon as it is removed from the culture chamber.
人造骨骼缺乏形成天然骨骼的薄层软骨，并缺乏血液供应，因此一旦离开培养腔就会缺乏养分。
Culture of pig composite dermal substitute pig keratinocytes after passage were added on the dermal matrix on the 3rd day of the culture and thin pig keratinocyte layer was found.
猪的复合皮肤替代物的培养情况：培养第3天在真皮基质上加入传代后的猪角质形成细胞，其上可见薄的角质形成细胞层。
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