Final answer:
The AATB was established in 1976 to ensure the quality and safety of donor tissues and organs for transplantation, and to standardize tissue banking practices.
Step-by-step explanation:
The American Association of Tissue Banks (AATB) was established in the year 1976. The AATB is a professional, non-profit organization dedicated to ensuring the quality and safety of donor tissues and organs for transplantation. It operates by developing standards for tissue banking and providing accreditation to tissue banks across the United States. The establishment of the AATB marked a significant milestone in the field of organ and tissue transplantation, as it helped standardize practices and improve the quality of care for recipients of tissue grafts.