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Conjoined twins originate from a single fertilized egg so they are always identical and same-sex twins. The developing embryo starts to split into identical twins within the first two weeks after conception but then stops before completion, leaving a partially separated egg which continues to mature into a conjoined fetus.
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www.twinstuff.com/conjoined.htm
www.twinstuff.com/conjoined.htm
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A Chronological History of Conjoined Twins; Compiled by Craig Sanders, Twinstuff.Com ... Please click on a time period in the box below to learn more about the history of conjoined twins. Please also note that as of May, 2007, all updates to this list (including information for 2004-present) is now being managed on our...
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www.twinstuff.com/conjoined-timeline.htm
www.twinstuff.com/conjoined-timeline.htm
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zygote.swarthmore.edu/cleave4b.html
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The United States National Library of Medicine has a fantastic online exhibit about the history of conjoined twins, beginning in medieval times. Titled "From 'Monsters' to Modern Medical Miracles," the site explores the science and culture of "Siamese" twins.
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www.boingboing.net/2008/02/05/history-of-conjoined.html
www.boingboing.net/2008/02/05/history-of-conjoined.html
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Last reviewed: 02 December 2008; Last updated: 15 October 2008; First published: 02 August 2006; Metadata| Permanence level: Permanent: Stable Content ... History of Medicine ... Embryology and Classification of Conjoined Twins...
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www.nlm.nih.gov/hmd/conjoined/index.html
www.nlm.nih.gov/hmd/conjoined/index.html
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Since 1984, Professor Lewis Spitz and Mr Edward Kiely at Great Ormond Street Children’s Hospital have led on management of 20 sets of conjoined twins at GOS and three at other centres. They have also been involved in other cases.
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www.ich.ucl.ac.uk/pressoffice/pressrelease_00148
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Conjoined twins have fascinated people throughout history, and society has viewed their unique connectedness in different ways. ... Throughout history, conjoined twins have appeared in myths and legends. The Greek and Roman god Janus had two faces, one young, one old. Centaurs, a combination of horse and man,
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www.devbio.com/article.php?id=113
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Siamese twins were hugely in the news in February 2004 after the birth of Rebeca Martinez with a second parastitic head growing out of the top of her own skull. Rebecca died after the conjoined twin head was cut off. ... Subject: Conjoined twins ... good to see conjoined twins live after surgery good for them...
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www.globalchange.com/siamese.htm
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A very interesting page about the social history of conjoined or Siamese twins in America. One of the more famous case of conjoined twins is that of Chang and Eng, who were born in Siam in 1811 and were joined at the lower chest.
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www.stumbleupon.com/url/zygote.swarthmore.edu/cleave4b....
www.stumbleupon.com/url/zygote.swarthmore.edu/cleave4b.html
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