Umbilical cord is used in place of a bone marrow transplant in the treatment of blood disorders such as leukemia, with donations released for transplant through one registry, Netcord.org, passing 1,000,000 as of January 2013. Cord blood is used when the patient cannot find a matching bone marrow donor; this "extension" of the donor pool has driven the expansion of public banks. The umbilical cord in some mammals, including cows and sheep, contains two distinct umbilical veins. There is only one umbilical vein in the human umbilical cord. In some animals, the mother will gnaw through the cord, thus separating the placenta
Abortion in the Republic of Ireland foetus suffering from anencephaly (the absence of a major portion of the brain, skull, and scalp; blind, deaf, unconscious, and unable to feel pain, a disorder which is universally fatal), was prevented from travelling to Britain by the Health Service Executive. The High Court ruled on 9 May 2007 that she could not lawfully be prevented from travelling even though she was a ward of the state. Amanda Mellet became pregnant in 2011; however, the foetus was suffering from Edwards syndrome, a fatal condition. She was unable to have an abortion in Ireland and had to travel to the UK.