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

目的了解移植物抗宿主病(GVHD)的组织学特点，GVHD的别脾脏移植的关系。

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体移植的可行性。