This CT Circular includes thorough descriptions of the most commonly used minimally manipulated HCT/P products. This new version includes revised descriptions, including those for nucleated cell preparations. AABB coproduced this CT Circular with 12 other blood and cellular therapy organizations and two federal liasons. The CT Circular is an extension of container labels and, in addition to definitions, includes information on donors and side effects of immediate and delayed immunologic and nonimmunologic complications.