The replica bone lacks the thinlayer 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。
2
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.