日批在线视频_内射毛片内射国产夫妻_亚洲三级小视频_在线观看亚洲大片短视频_女性向h片资源在线观看_亚洲最大网

US EUROPE AFRICA ASIA 中文
China / Society

First human head transplant may be carried out in 2017 in China

By Wu Yan (chinadaily.com.cn) Updated: 2015-09-15 16:25

First human head transplant may be carried out in 2017 in China

Valery Spiridonov is assisted before a news conference in Vladimir, Russia, June 25, 2015.[Photo/Agencies]

A head transplant is taking a living head and putting it onto a new body.

But actually, it's a body transplant, as the head will be gaining a new body to control. However, as the term "whole body transplant" is already used to mean transferring the brain between bodies, calling it a "head transplant" makes it clear that the whole head is to be switched, brain included.

How would Canavero's human head transplant work?

The donor body and the head to be attached are first cooled down to 12-15?C to ensure that the cells last longer than a few minutes without oxygen. The tissue around the neck is then cut, with the major blood vessels linked with tiny tubes. The spinal cord on each party is then severed cleanly with an extremely sharp blade.

At this point, the head is ready to be moved, and the two ends of the spinal cord are fused using a chemical called polyethylene glycol, encouraging the cells to mesh.

After the muscles and blood supply are successfully connected, the patient is kept in a coma for a month to limit movement of the newly fused neck, while electrodes stimulate the spinal cord to strengthen its new connections.

Following the coma, Canavero anticipates that the patient would immediately be able to move, feel their face and even speak with the same voice. He believes physiotherapy would allow the patient to walk within a year.

What does the scientific community make of the human head transplant?

Dr Hunt Batjer has attracted headlines for being particularly blunt: "I would not wish this on anyone. I would not allow anyone to do it to me as there are a lot of things worse than death."

Dr Jerry Silver witnessed the 1970s monkey head transplant experiment and describes the procedure as "bad science", adding that "just to do the experiments is unethical".

Dr Chad Gordon, professor of plastic and reconstructive surgery and neurological surgery at Johns Hopkins University, agrees that Canavero's claims are scientifically implausible.

Dr Paul Myers, associate professor of biology at the University of Minnesota at Morris, puts it even more explicitly: "This procedure will not work... Try it with monkeys first. But he can't: the result would be, at best, a shambling horror, an animal driven mad with pain and terror, crippled and whimpering, and a poor advertisement for his experiment. And most likely what he'd have is a collection of corpses that suffered briefly before expiring."

Others wonder whether Canavero might simply be enjoying the limelight with a PR stunt, including Dr Arthur Caplan, director of ethics at the NYU Langone Medical Centre. Describing the doctor as "nuts," he explained to CNN: "Their bodies would end up being overwhelmed with different pathways and chemistry than they're used to, and they'd go crazy."

Has a head transplant been tried before?

Highlights
Hot Topics
...
主站蜘蛛池模板: 欧美日韩高清 | 亚洲三级中文字幕 | 久久精品99久久久久久 | 一区二区中文字幕 | av手机在线看| 97超碰免费在线观看 | 91最新国产 | 国产专区在线播放 | 亚洲欧美日本在线 | 亚洲毛片亚洲毛片亚洲毛片 | 五月激情六月丁香 | 国产一区免费视频 | 亚洲毛片在线看 | 亚洲美女视频网站 | 久久久蜜桃一区二区 | 一区二区不卡视频在线观看 | 日本成人黄色片 | 日日舔夜夜摸 | 亚洲综合色网 | 国产又色又爽又黄的 | 婷婷午夜精品久久久久久性色av | 婷婷色视频 | av中文字幕不卡 | 日韩美女视频一区 | 国产专区av | 日韩欧美卡一卡二 | 午夜不卡影院 | 久久婷婷成人综合色 | 华人永久免费视频 | 欧美啪啪片 | 成人毛片在线视频 | 国产精品第一区 | 天天操天天舔天天干 | 亚洲第一福利视频 | 日韩国产激情 | 日日夜夜精 | 在线免费观看av网址 | av高清一区二区 | 97久久久 | 欧美成人性生活 | 久久午夜国产精品 |