Mycophenolic acid morpholinoethylester (RS-61443) is a new immunosuppressant that prevents and halts heart allograft rejection by selective inhibition of T- and B-cell purine synthesis - Morris,R.E.; Hoyt,E.G.; Murphy,M.P.; Eugui,E.M.; Allison,A.C. (Transplant Proc, 1990)