Editing Embryonic stem cell (section)

===Models of genetic disorder===
Several new studies have started to address the concept of modeling genetic disorders with embryonic stem cells. Either by genetically manipulating the cells, or more recently, by deriving diseased cell lines identified by prenatal genetic diagnosis (PGD), modeling genetic disorders is something that has been accomplished with stem cells. This approach may very well prove valuable at studying disorders such as [[Fragile-X syndrome]], [[Cystic fibrosis]], and other genetic maladies that have no reliable model system.

[[Yury Verlinsky]], a Russian-American [[medical researcher]] who specialized in [[embryo]] and cellular [[genetics]] (genetic [[cell biology|cytology]]), developed [[prenatal diagnosis]] testing methods to determine genetic and [[chromosomal disorders]] a month and a half earlier than standard [[amniocentesis]]. The techniques are now used by many pregnant women and prospective parents, especially couples who have a history of genetic abnormalities or where the woman is over the age of 35 (when the risk of genetically related disorders is higher). In addition, by allowing parents to select an embryo without genetic disorders, they have the potential of saving the lives of siblings that already had similar disorders and diseases using cells from the disease free offspring.<ref name=ChicagoTribune>[http://www.chicagotribune.com/news/chi-hed-verlinsky-20-jul20,0,1789019.story "Dr. Yury Verlinsky, 1943–2009: Expert in reproductive technology"] {{Webarchive|url=https://web.archive.org/web/20090808061655/http://www.chicagotribune.com/news/chi-hed-verlinsky-20-jul20,0,1789019.story |date=2009-08-08 }} ''Chicago Tribune'', July 20, 2009</ref>