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。