Contents:

U. T. Hopt: 
Editorial

C. Hammer: 
Preface

J. Blusch, U. Martin: 
Porcine Endogenous Retroviruses (PERV) and Xenotransplantation

G. Scheef, N. Fischer, R. R. Tönjes: 
Porcine Endogenous Retroviruses (PERV): Passaging of Virions in Humans Cells Caused Adaptation of Transcriptional Activity by Enhancer Multimerization

K. von der Helm: 
Risk of Infection with Porcine Endogenous Retroviruses in Xenotransplantation

A. R. Simon, A. Haverich: 
Tolerance Induction in Xenotransplantation

H. Grimm, G. Lindemann, P. Mages:  
Posthyperacute Xenograft Rejection – Pathomechanisms and Therapeutic Strategies

M. Winkler, J. Schmidtko, K. Wiebe: 
Which Xenotransplant First: Kidney or Thoracic Organ?

A. Pascher: 
Temporary Liver Replacement with Xenogene and Allogene Extracorporal Liver Perfusion