The American Association of Tissue Banks (AATB) is a professional, non-profit, scientific and educational organization. It is one of the only national tissue banking organizations in the United States, and its membership totals more than 120 accredited tissue banks and 1,900 individual members. These banks recover tissue from more than 39,000 donors and distribute in excess of 3.2 million allografts for more than 1.75 million tissue transplants performed annually in the U.S. The overwhelming majority of the human tissue distributed for these transplants comes from AATB-accredited tissue banks., The AATB has been dedicated to improving and saving lives by promoting the safety, quality and availability of donated human tissue. To fulfill that mission, the AATB publishes standards, accredits tissue banks and certifies personnel. The association also interacts with regulatory agencies and conducts educational meetings.