There is no good evidence that immunosuppressive drug regimens are effective.
The immunosuppressive drugs used to maintain the pancreas allograft appear to be able to keep autoimmunity at bay (Ref.
A gene homologous to human interleukin 10 in cytomegalovirus was found to be powerfully immunosuppressive  .
skewed the balance toward suppression by causing an expansion of immunosuppressive regulatory cells.
It has recently become apparent that peri-operative allogeneic blood transfusion is associated with a clinically relevant immunosuppressive effect.