UK, Advisory Committee on the Safety of Blood, Tissues and Organs (SaBTO), Donation of Starting Material for Cell-Based Advanced Therapies, 2014-06, p. 39, para. 5.1.2 ([Internet, 202-04-05](https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/326823/Cellular_Therapy.pdf))