Task: Answer Verification
Input (English): Question: Does blockade of CD40-CD154 at the time of donor-specific blood transfusion lead to prolonged kidney allograft survival in nonhuman primates?
Answer: DST under the cover of relatively high levels of anti-CD154 failed to result in prolonged graft survival or prevent the formation of antidonor antibodies, when cyclosporine was given after transplantation.
Output (English): no