在线国产一区二区_成人黄色片在线观看_国产成人免费_日韩精品免费在线视频_亚洲精品美女久久_欧美一级免费在线观看

  .contact us |.about us
Home BizChina Newsphoto Cartoon LanguageTips Metrolife DragonKids SMS Edu
news... ...
             Focus on... ...
   

New genetic find sheds light on old issue
( 2002-02-01 01:25 ) (1 )

Chinese scientists say they have determined the P16 gene is the major link in the genetic programme of cell ageing, a major step in deciphering the secret to growing old.

Han Qide, an academician at the Chinese Academy of Sciences, described this genetic discovery on Thursday as an original contribution to Chinese research on the mechanism of ageing.

Han said it opened up a new path for the scientific community to decode the secret of human cell ageing.

Using funding from 18 different sources over the last few years, the discovery was made by a group of experts headed by Tong Tanjun and Zhang Zongyu, professors from the Medical Department of Beijing University.

The American Journal of Biological Chemistry published two papers on the research results last December, and they were included in the "Science Citation Index.''

The two Chinese experts said they also found the P16 gene can affect the life span of cells and the cellular biological clock length.

They discovered the reduction of negative control is an important cause of over-expression of the P16 gene in replicative cellular ageing.

The experts also proved by four different means that controlling the expression of the P16 gene not only prolongs the life span of the cell and reduces the level of ageing but also slows down the shortening of the cellular biological clock length.

"The opposite results will be made if we strengthen the expression of P16 gene,'' said the experts.

Professor Tong said cellular ageing was the common foundation for geriatric diseases.

"Our research has shown at least the life span of some human cells can be regulated through recombinant DNA technique,'' he said.

 
   
 
   

 

         
         
       
        .contact us |.about us
  Copyright By chinadaily.com.cn. All rights reserved  
主站蜘蛛池模板: 亚洲第一av | 四虎影院最新地址 | av天天操| 激情久久综合 | 综合色婷婷一区二区亚洲欧美国产 | 国产精品一二三四区 | 一区二区三区不卡视频 | 亚洲成人毛片 | 久久黄色影院 | 黑人巨大精品欧美一区二区 | 自拍偷拍一区二区三区 | 日日舔 | 黄视频在线播放 | 国产精品三级在线 | 久久久久久九九九九 | 国产在线视频一区 | 午夜免费小视频 | www午夜| 日韩高清精品免费观看 | 黑人操亚洲女人 | 一区二区免费视频 | 四虎8848 | 久久99久久99 | 最新日韩在线 | 亚洲成人精品在线 | 青青五月天 | 99视频免费在线观看 | av不卡在线 | 黄色日批视频 | 日韩欧美在线观看 | 成人黄色av| 中文字幕一区二区三区乱码 | 国产成人三级一区二区在线观看一 | 色综合久久久 | 九九久久免费视频 | 国产成人在线播放 | 成人激情视频 | 日韩欧美国产精品 | 一区二区久久 | 97免费在线 | 黄色小视频免费 |