Objective To evaluate the histological characteristics of xenogeneic graft-versus-host disease(GVHD), and to differentiate it from the allogeneic GVHD.
目的了解异种移植物抗宿主病（GVHD）的组织学特点，与同种GVHD的区别及异种脾脏移植的关系。
Objective (1) Take tissue engineering way of hypotonic-chemical detergent to prepare xenogeneic acellular nerve scaffold, which makes an optimal material for the graft of xenogeneic acellular nerve.
目的(1)采用化学萃取的组织工程学方法制备去细胞异种神经支架，拟为异种神经移植提供理想的支架材料。
Objective (1) Take tissue engineering way of hypotonic-chemical detergent to prepare xenogeneic acellular nerve scaffold, which makes an optimal material for the graft of xenogeneic acellular nerve.
目的(1)采用化学萃取的组织工程学方法制备去细胞异种神经支架，拟为异种神经移植提供理想的支架材料。
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