PROPHYLAXIS OF REJECTION- 1.25-2.5 MG/KG/DAY FOR 1-3 WEEKS AFTER KIDNEY, PANCREAS OR LIVER TRANSPLANT AND 3-10 DAYS AFTER HEART TRANSPLANTATION. TT OF REJECTION CRISIS OR GRAFT VERSUS HOST DISEASE- 2.5-5 MG/KG/DAY UNTIL THE CLINICAL AND BIOLOGICAL SIGNS IMPROVE. APLASTIC ANAEMIA - 2.5-5 MG/KG/DAY FOR 5 CONSECUTIVE DAYS.