Final answer:
Potential donors who have received pituitary derived human growth hormone should be excluded from tissue donation due to the possibility of transmitting CJD or Creutzfeldt-Jakob Disease.
Step-by-step explanation:
Potential donors who have received pituitary derived human growth hormone should be excluded from tissue donation due to the possibility of transmission of CJD or Creutzfeldt-Jakob Disease. CJD is a rare, degenerative, and fatal brain disorder that is caused by abnormal proteins called prions. It can be transmitted through contaminated tissues and surgical instruments or through consumption of infected meat or contaminated growth hormones.