Embryonic Stem Cell Research Oversight Committees
The National Academies called for the establishment of Embryonic Stem Cell Research Oversight (ESCRO) Committees in its 2005 "Guidelines for Human Embryonic Stem Cell Research" to manage the ethical and legal concerns in human embryonic stem cell research. Because of the complexity and novelty of many of the issues involved in that research, the Guidelines committee believes that all research institutions engaged in human embryonic stem cell research should create and maintain these committees at the local level.
Stem cell controversy
A portion of stem cell researchers use embryos that were created but not used in "in vitro" fertility treatments to derive new stem cell lines. Most of these embryos are to be destroyed, or stored for long periods of time, long past their viable storage life. In the United States alone, an estimated at least 400,000 such embryos exist. This has led some opponents of abortion, such as Senator Orrin Hatch, to support human embryonic stem cell research. See also embryo donation.