• sperm
  • The government's draft bill would allow surplus embryos to be used for medical research with the consent of the egg and sperm donors. (theglobeandmail.com)
  • Eggan's technique provides a window into exactly what happens to turn back the clock in cells during cloning--and, indeed, in the normal process of creating sperm, eggs and embryos. (wikipedia.org)
  • Embryo development begins with a sperm fertilizing an egg to become a zygote which undergoes many cleavages to develop into a ball of cells called a morula. (wikipedia.org)
  • organism
  • For many decades, stem cells have played an important role in medical research, beginning in 1868 when Ernst Haeckel first used the phrase to describe the fertilized egg which eventually gestates into an organism. (wikipedia.org)
  • eggs
  • Because they block creation of fertilized eggs, they would not meet abortion opponents' definition of abortion-inducing drugs. (nytimes.com)
  • Chimeras are formed from at least four parent cells (two fertilised eggs or early embryos fused together). (wikipedia.org)
  • uterus
  • Women undergoing IVF typically choose to transfer to their uterus embryos with the highest likelihood of implantation and, eventually, healthy birth. (aappublications.org)
  • Based on the belief that a fertilized egg is a person, some religious groups and conservative politicians say disrupting a fertilized egg's ability to attach to the uterus is abortion, "the moral equivalent of homicide," as Dr. Donna Harrison, who directs research for the American Association of Pro-life Obstetricians and Gynecologists , put it. (nytimes.com)
  • injunction
  • We have discussed the injunction issued by Judge Royce C. Lamberth against President Obama's ESCR funding policy - and the mendacious legislative response of the likes of Arlen Specter that would authorize the Feds to fund cloning research in addition to restoring Obama's more limited policy. (cbc-network.org)
  • researchers
  • The appeals court overturned a ruling by a federal judge who found that the U.S. National Institutes of Health (NIH) guidelines on such research violated the law because embryos were destroyed and it put other researchers working with adult stem cells at a disadvantage to win federal grants. (reuters.com)
  • The researchers, Dr. James Sherley, a biological engineer at Boston Biomedical Research Institute, and Theresa Deisher, of Washington-based AVM Biotechnology, could appeal the ruling to the full appeals court, a lawyer involved in the case said. (reuters.com)
  • In June 2005, Dr. Robert Lanza and other researchers at Advanced Cell Technology in Massachusetts published a paper reporting that they created cloned cow embryos, implanted them into a cow, and grew them in utero to four months gestation. (missourilife.org)
  • At this time researchers are still uncertain of what clinical differences may exist between iPS cells and embryonic stem cells, meaning that, at this time, further research on both kinds of stem cells is necessary to fully understand the medical potential of these new discoveries. (spusa.org)
  • cells
  • The embryos used in the Korean research, made through a technique called somatic cell nuclear transplantation, were destroyed after the stem cells were extracted. (sfgate.com)
  • In cattle, when individual cells from 4- and 8-cell embryos and implanted in different foster mothers, they can develop normally into calves and this technique has been used routinely within cattle breeding schemes for over 10 years. (chipbennett.net)
  • The promise is that, in time, cells that have been destroyed or do not function normally can be replaced with new cells generated from stem cells. (lexology.com)
  • Thus, if a corporation saw fit to conduct a research program based on embryonic stem cells with its own money, it was generally free to do so. (lexology.com)
  • The creation of embryonic stem cells. (archives.gov)
  • They argued that they were at risk of being squeezed out of federal grants for their own work with adult stem cells, which do not involve the destruction of embryos. (reuters.com)
  • It's an exciting time in this area of research to take stem cells that can become anything and get them to specifically become blood cells,' Stanley was quoted. (medindia.net)
  • The ASCC has narrowed its research focus for the past year and a half, putting half of its resources into trying to manufacture red blood cells. (medindia.net)
  • Despite differences in public opinion on this issue, a large majority of the public supports continued research using embryonic stem cells. (aappublications.org)
  • There is some recent evidence that hESC lines can be generated from 1 to 2 cells obtained by a biopsy procedure that does not require destruction of the embryo, but this procedure has not obviated the need to continue to derive stem cells in the traditional manner, which results in the destruction of an embryo. (aappublications.org)
  • If scientists allow the embryo to develop in the natural state in a mother's womb or an artificial womb environment, the cells mature and become - adult! (missourilife.org)
  • Embryonic stem cells are typically derived from embryos that are four to five days old. (spusa.org)
  • Pre-implantation embryos at this stage of development are called blastocysts, hollow microscopic balls of cells. (spusa.org)
  • Embryonic stem cells have the unique ability to self-replicate indefinitely before creating specialized cells, which is one of the advantages of performing research on them. (spusa.org)
  • One potential application of embryonic stem cells is the creation of new methods for testing drugs. (spusa.org)
  • An important part of this research would be the identification of how and why undifferentiated cells become differentiated. (spusa.org)
  • James Sherley and Theresa Deisher work on adult stem cells and oppose research on embryonic cells, saying that the adult-cell work is both scientifically and ethically superior. (blogspot.com)
  • Eggan's research goals at Harvard were to understand how nuclear transplantation works, and to make stem cells that carry genes for specific diseases such as Parkinson's disease, amyotrophic lateral sclerosis (Lou Gehrig's disease), and Alzheimer's. (wikipedia.org)
  • During the two-week period, stem cells may be harvested from the cybrid, for research or medical purposes. (wikipedia.org)
  • The discovery of adult stem cells led scientists to develop an interest in the role of embryonic stem cells, and in separate studies in 1981 Gail Martin and Martin Evans derived pluripotent stem cells from the embryos of mice for the first time. (wikipedia.org)
  • Great levels of success and potential have been realized from research using adult stem cells. (wikipedia.org)
  • Only cells from an embryo at the morula stage or earlier are truly totipotent, meaning that they are able to form all cell types including placental cells. (wikipedia.org)
  • Political leaders are debating how to regulate and fund research studies that involve the techniques used to remove the embryo cells. (wikipedia.org)
  • The addition of the two growth phases into the cell cycle allows for the cells to increase in size, as up to this point the blastomeres undergo reductive divisions in which the overall size of the embryo does not increase, but more cells are created. (wikipedia.org)
  • derivation
  • Judge Douglas Ginsburg, appointed by President Ronald Reagan, wrote that it was "entirely reasonable" for the NIH to interpret the law as "permitting funding for research using cell lines derived without federal funding, even as it bars funding for the derivation of additional lines. (reuters.com)
  • Had Congress intended to limit the Dickey-Wicker to only those discrete acts that result in the destruction of an embryo, like the derivation of ESCs, or to research on the embryo itself, Congress could have written the statute that way. (cbc-network.org)
  • Daleks
  • At the end of this serial, the Daleks are seemingly wiped out when their power source is destroyed. (wikipedia.org)
  • The Daleks here plan to destroy the Earth's magnetic core and pilot the planet. (wikipedia.org)
  • The Doctor activates the Time Destructor and the Daleks are destroyed, though his companion Sara Kingdom is turned to dust. (wikipedia.org)
  • However, the Doctor turns the power source against the Daleks and apparently destroys them. (wikipedia.org)
  • In the serial, the Fourth Doctor (Tom Baker) and his companions Sarah Jane Smith (Elisabeth Sladen) and Harry Sullivan (Ian Marter) are travelling back to the space station via transmat beam from a previous story to return to the TARDIS, when they are intercepted by the Doctor's race, the Time Lords, and are directed to Skaro at the time of the Daleks' creation. (wikipedia.org)
  • organisms
  • In many organisms the development of the embryo up to this point and for the early part of the blastula stage is controlled by maternal mRNA, so called because it was produced in the egg prior to fertilization and is therefore exclusively from the mother. (wikipedia.org)
  • purposes
  • If embryos that have undergone a biopsy for purposes unrelated to health are not going to be chosen for implantation and will be eventually discarded, then the single biopsy procedure does not result in "sparing" embryos (although it may result in a delay in destruction). (aappublications.org)
  • ethical
  • But it hopes the ethical and scientific questions about when and how embryos are used will be determined by a parliamentary committee that begins hearings this fall, Health Minister Allan Rock's spokesman said in late July. (theglobeandmail.com)
  • Research utilizing cybrids has been hotly contested due to the ethical implications of further cybrid research. (wikipedia.org)
  • Amendment
  • In 1987, the U.S. Supreme Court ruled in case of Edwards v. Aguillard that to require the teaching of 'creation science' alongside evolution violated the First Amendment by promoting religion. (foxnews.com)
  • involves
  • Reproductive cloning involves creating a cloned embryo and implanting it into a woman with the goal of creating a child. (yowusa.com)
  • federal
  • But I have made it very clear to the Congress that the use of federal money, taxpayers' money, to promote science which destroys life in order to save life is -- I'm against that. (sfgate.com)
  • The ban was on the use of federal funds to aid such research. (lexology.com)
  • His decision was put on hold pending appeal so federal money continued to flow after the White House warned research costing millions of dollars would be lost if halted. (reuters.com)
  • Many expect the next White House and Congress to reverse the ban on federal subsidies for ESC research. (medindia.net)
  • amounts
  • Large amounts of the maternal mRNA are destroyed at this point, either by proteins such as SMAUG in Drosophila or by microRNA. (wikipedia.org)
  • early
  • 6 , 7 Although these new applications are intriguing, they remain in the early stages of development, and additional research is needed to make the transition from bench to therapeutics. (aappublications.org)
  • Only when the blastocoele is formed does the early embryo become a blastula. (wikipedia.org)
  • During the blastula stage of development, a significant amount of activity occurs within the early embryo to establish cell polarity, cell specification, axis formation, and regulate gene expression. (wikipedia.org)
  • The blastula stage of early embryo development begins with the appearance of the blastocoele. (wikipedia.org)