1) The ethics of xenotransplantation are relatively unworrying.

2) However, the science of xenotransplantation is much less straightforward.

3) At 6 weeks following xenotransplantation, large numbers of fully developed hair follicles were emerged in SD rat footpad.

4) Patients undergoing xenotransplantation will be especially vulnerable, because their natural defences are down.

5) Plagues aside, many critics see xenotransplantation as a colossal waste of resources.

6) In guinea pig to rat heart xenotransplantation model, cobra venom factor is administrated to avoid hyperacute rejection, and thus delayed xenograft rejection model is made.

7) However, xenotransplantation brings the risk of transplanting animal viruses and thus creating new human diseases.

8) The revisions will reflect comments received since September from both opponents and advocates of xenotransplantation.

9) America's Food and Drug Administration has already published draft guidelines for xenotransplantation.

10) There is no proof yet of safety or danger cross - species infection in xenotransplantation till now.

11) Objective To study the role of vascular endothelial cells in hyperacute rejection of pig - to - human xenotransplantation.

12) Objectives To establish standard cervical heart transplantation in rodents that was widely used abroad and introduce its application in golden hamster rat xenotransplantation.

13) Objective: To determine the possible relationship between the ultrastructural changes and reperfusion disturbance of the xenograft following discordant liver xenotransplantation.

14) Objective To study the cellular nuclear density difference of the hepatic portal vein between the human and pig and provide evidence for pig- to-human liver xenotransplantation.

15) Then to make a conclusion that cross - species isn t morally irrelevant in xenotransplantation.