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

目了解异种移植物抗宿(GVHD)组织学特点，与同种GVHD别及异种脾脏移植。

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

讨微囊化人头皮毛乳头细胞体外培养及异体移植可行性。