Organ harvesting from Falun Gong practitioners in China must be taken from a living donor (kidneys must be transplanted within 24–48 hours; livers within 12 hours, and hearts within 8 hours). Kirk C. Allison, Associate Director of the Program in Human Rights and Medicine at the University of Minnesota, wrote that the "short time frame of an on-demand system [as in China] requires a large pool of donors pre-typed for blood group and HLA matching," which is consistent with reports of Falun Gong prisoners having blood and tissue tested in custody. He wrote that China's short organ wait times could not be assured on a “random death” basis,
Bidder's organ oocytes (egg cells). Only rudimentary oviducts are developed, though, preventing eggs from actually being laid. The Bidder's organ only develops into an ovary analogue when testes are removed experimentally or not functioning properly (e.g. due to exposure to endocrine-disrupting chemicals). Importantly, females can have Bidder's organs in addition to true ovaries, which suggests that the Bidder's organ might not be a rudimentary ovary. It is named in honour of Friedrich Bidder. The organ's internal anatomy consists of two parts; the central portion, consisting of connective tissue and rich in blood vessels, and its periphery, consisting of the cortex, which contains