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
Confraternities of the Cord Confraternities of the Cord Confraternities of the Cord are pious associations of the faithful, the members of which wear a cord or cincture in honour of a saint, to keep in mind some special grace or favour which they hope to obtain through his intercession. In the early Church virgins wore a cincture as a sign and emblem of purity, and hence it has always been considered a symbol of chastity as well as of mortification and humility. The wearing of a cord or cincture in honour of a saint is of very ancient origin, and we find the first