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| Transgender pregnancy ： ウィキペディア英語版 |
Transgender pregnancy
Transgender pregnancy is the incubation of one or more embryos or fetuses by transgender people.
Male pregnancy is alien to mammals, but the "phenomenon is the universal reproductive mode of pipefishes, seahorses and sea dragons."〔(【引用サイトリンク】 title=Male pregnancy )〕
== Trans women==
XY-born assigned male at birth generally do not have the anatomy needed for natural embryonic and fetal development. Today, there are no successful cases regarding uterus transplant concerning a trans woman or a male. The theoretical issue of ectopic pregnancy (pregnancy outside the uterine cavity) by implantation in anatomical males has been addressed by experts in the field of fertility medicine, who stress that the concept of ectopic implantation, while theoretically plausible, has never been attempted and would be difficult to justify – even for women lacking a uterus – owing to the extreme health risks to both the parent and child.
Robert Winston, a pioneer of in-vitro fertilization, told London's ''Sunday Times'' that "male pregnancy would certainly be possible" by having an embryo implanted in a man's abdomen – with the placenta attached to an internal organ such as the bowel – and later delivered by Caesarean section.〔(Men can have babies; Study still in infancy though: Expert )〕 Ectopic implantation of the embryo along the abdominal wall, and resulting placenta growth would, however, be very dangerous and potentially fatal for the host, and is therefore unlikely to be studied in humans.〔〔(【引用サイトリンク】 title=A Womb Of His Own )〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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