Indicate whether each of the following statements (a-e) is TRUEor FALSE.  If you think a statement is FALSE, explainwhy. (10 pts)
a.  TRUE / FALSE  Graft rejection ismediated by pre-existing host T cell effectors and antibodiesspecific for antigens on the grafted tissue.
b.  TRUE / FALSE  Allogeneic grafts betweenindividuals with identical HLA genes will be accepted.
c.  TRUE / FALSE    Your parentsare generally going to be your best source of tissues if you need atransplant.
d.  TRUE / FALSE    Graftrejection only occurs when alloantigens from the grafted tissue arepicked-up by recipient APCs and presented to recipient T cells.
e. TRUE / FALSEÂ Â Â In Graft Versus Host Disease(GVHD) innate cells from the grafted tissue recognize hostalloantigens and begin attacking host tissues.
