 Acute rejection shall be treated initially by increasing the tacrolimus dose to achieve a level 15-20 ngml for 48 hrs. If liver function test results will not show improvement by the 3rd day after increasing tacrolimus dose, a biopsy should be performed. Only biopsy proven rejection shall be treated according to the following protocol. Mild to moderate rejection shall be treated in the study group with methylprednisolone 1 gm IV with tapering doses of steroid as described above. Steroids shall be discontinued after the completion of the taper. In the control group, methylprednisolone 1 gm IV shall be followed by tapering doses and by prednisone 20 mg once daily, which shall be progressively reduced accordingly. The protocol shall also include a repeat biopsy if there is no improvement in the liver function test at the end of steroid taper. Severe rejection or steroid resistant rejection shall be treated with OKT3 at 5mg IV day for 5-10 days after pre-medication. 