The purpose of this legislation is to reauthorize the Stem Cell Therapeutic and Research Act of 2005, which supports stem cell research and the use of cord blood for medical treatments. The act aims to ensure that there is adequate funding and a sufficient supply of high-quality cord blood units available for transplantation, which can help treat various medical conditions. Key provisions of the act include an increase in funding for the C.W. Bill Young Cell Transplantation Program.