异种的

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

目了解异种物抗宿主病(GVHD)组织学特点，与同种GVHD区别及异种脾脏关系。

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，即熊蜂不同访花行为以及物花部结差异避免柱头与熊蜂携带异种花粉接触。