<prompt> Immunosuppressive drugs are less effective in which type of graft rejection -Acute cellular rejectionAcute humoral rejectionChronic rejectionNone of the above  <response>: Ans. is b i.e., Acute humoral rejection o On this question, i could get only following refrence -Because most clinically available immunosuppressive drugs target T-cells, they or ineffective in antibody mediated rejection....Textbook of organ transplants 