Objective To evaluate the histological characteristics of xenogeneic graft-versus-host disease(GVHD),and to differentiate it from the allogeneic GVHD.

目了解异种物抗宿主病(GVHD)特点，与同种GVHD别及异种脾脏关系。

Objective:To explore the possibility of cultivation of microencapsulated human hair dermal papilla cells in vitro and xenogeneic model.

探讨微囊化人头皮毛乳头细胞体外培养及异体可行性。