异种的

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

目的了解异移植物抗宿主病(GVHD)的特点，与同GVHD的区别及异脾脏移植的关系。

The reproductive isolation among sympatric Pedicularis species is influenced by the differences of pollinator behavior and floral form via ethological isolation and mechanical isolation.

另一方面是通过机械隔离机制，即熊蜂不同的访行为以及植物部结构上的差异避免柱头与熊蜂携带的异接触。