hercules6681 wrote:
可是別人的見解您聽不進去，
只是一直轉貼文章，
您對這些又了解多少?
一下說挺同；一下說愛好科學。
這位大大,您沒看到此樓有好幾個人在說是個假新聞偽科學嗎?
做為開版主,我再增添個新知說明不為過吧!
挺同不能同時同時做個科學愛好者 ???
我的人生沒有您那麼狹隘 !!
我就是想分享給科學愛好者,不管他是挺還是反同.
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鐵鎚人 wrote:
找到相關技術的說明...(恕刪)
所以說引用這些資料一定要看源頭,這技術明明還沒成熟卻說得像已經可以用一樣
Saitou and Hayashi have found that the offspring generated by their technique usually seem to be healthy and fertile, but the PGCs themselves are often not completely 'normal'. For example, the second-generation PGCs often produce eggs that are fragile, misshapen and sometimes dislodged from the complex of cells that supports them1. When fertilized, the eggs often divide into cells with three sets of chromosomes rather than the normal two, and the rate at which the artificial PGCs successfully produce offspring is only one-third of the rate for normal in vitro fertilization (IVF). Yi Zhang, who studies epigenetics at Harvard Medical School in Boston, Massachusetts, and who has been using Saitou's method, has also found that in vitro PGCs do not erase their previous epigenetic programming as well as naturally occurring PGCs. “We have to be aware that these are PGC-like cells and not PGCs,” he says.
In addition, two major technical challenges remain. The first is working out how to make the PGCs convert to mature sperm and eggs without transplanting them back into testes or ovaries; Hayashi is trying to decipher the signals that ovaries and testes give to the PGCs that tell them to become eggs or sperm, which he could then add to artificial PGCs in culture to lead them through these stages.
http://www.nature.com/news/stem-cells-egg-engineers-1.13582
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claude0630 wrote:
拿生殖醫生專家來擋啊?
那個根本就只是有技術的生意人。
宣傳文案沒比電台賣藥的高明多少。
不懂怎麼會有人奉為圭臬？
那這篇不同地方刊登的報導行嗎?
https://www.thenewslens.com/article/10782
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thron wrote:
實驗室裡的東西還輪不到搞臨床的來指教,謝謝.
這位搞臨床的的確沒甚麼,
只不過連續六年榮登世界名醫錄.
而且那個世界名醫錄一定是騙人的.
http://blog.udn.com/a7260678/31624051
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