s******y 发帖数: 28562 | 1 Blind' mice eyesight treated with transplanted cells
Lead researcher, Prof Robin Ali , explains the behaviour of blind mice in
the water maze test. Video filmed and produced by UCL and Moorfields
Hospital
Related Stories
British scientists have restored the sight of blind mice by transplanting
light-sensitive photoreceptor cells into their eyes.
The work is a step towards a new treatment for patients with degenerative
eye diseases.
Scientists at University College London Institute of Ophthalmolo... 阅读全帖 |
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D*********n 发帖数: 279 | 3 http://www.infoplease.com/spot/bhmtimeline.html
African-American History Timeline
A chronology of black history from the early slave trade through Affirmative
Action
by Borgna Brunner
1600s •
1700s •
1800–1850 •
1850–1900 •
1900–1950 •
1950–present
1619 Photograph of newspaper advertisement from the 1780s
Photograph of newspaper advertisement from the 1780s
The first African slaves arrive in Virginia.
1746 Lucy Terry, an enslaved person in 1746, becomes the earliest... 阅读全帖 |
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f**z 发帖数: 186 | 4 睡前玩手机容易引发暂时性失明
网络图片
导语:《新英格兰医学期刊》(The New England Journal of Medicine;简称NEJM
) 是由美国麻州医学协会( Massachusetts Medical Society)出版的同行评审性质之医
学期刊。它也是目前全世界最受欢迎,以及广受阅读的综合性医学期刊。
近期发表在《新英格兰医学期刊》的一报告说,短暂的光学感应会导致一些智能手
机用户误认为他们某个眼睛失明。
文章作者是伦敦穆尔菲尔兹(Moorfields)眼科医院的专家戈登医生。他说,临时
性失明会影响在黑暗中躺着玩智能手机的人群。当他们停止阅读,去做别的事情,某只
眼睛可能会突然失明。幸运的是,这是一个临时的状态,仅持续几分钟,并没有永久性
的伤害。
戈登说他写文章是因为这些人可能认为他们已经中风或需要其他医疗急救。
戈登看到过十几个类似的案件,他希望这些已知的原因让人们知道,因为不明原因
会导致病人焦虑和不必要的调查,医生会认为暂时失明的人有短暂性脑缺血发作(TIA,
transient ischemic attack )。TIA是脑中临时缺血,中风的警告... 阅读全帖 |
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