【Phat Yeti出品】60-SECOND SCIENCE 官方听力文稿 + 讨论帖 （更新至：2008.03.07）

thikfyUID: 2339169

好了，对稿去~

豆豆～UID: 2378384

原来你一直潜水阿。。。

linmen1983UID: 2436667

顶一下!!!

thikfyUID: 2339169

原帖由 豆豆～ 于 2007-12-26 15:59 发表
原来你一直潜水阿。。。

刚潜，从昨天开始听的。。。结果就。。。

豆豆～UID: 2378384

Immune System Keeps Your Brain Tidy Too

You might not realize it, but you’re born with more brain cells than you know what to do with. Or at least more brain-cell connections. As you grow older, through childhood and adolescence, you get rid of the connections that aren’t being used to store information or to tell you which tie goes with that jacket.

For years researchers have known about this cellular pruning. But they didn’t know how it worked. Now scientists from the Stanford University School of Medicine report that it’s the immune system that carries out this critical brain maintenance. In fact, the same protein that helps gets rid of uninvited bacteria also eliminates unused neural connections. The findings appeared in the December 14 issue of the journal Cell.

This routine cellular maintenance is important for normal brain development. Mice that are missing this pruning protein wind up with disorganized, abnormal retinas. And mice that are prone to getting glaucoma make too much of the protein, particularly later in life—so connections in their retinas are destroyed when they shouldn’t be. Reigning in this overzealous pruning process could provide a treatment for glaucoma or for other diseases where neural connections are lost. But it probably won’t help you decide whether to go with the solid tie or the stripes.

thikfyUID: 2339169

又更新了，支持豆豆~

豆豆～UID: 2378384

终于浮出水面了，嘿嘿^_^

thikfyUID: 2339169

原帖由 豆豆～ 于 2007-12-26 18:50 发表
终于浮出水面了，嘿嘿^_^

那是，这么好的帖子要让更多的人看见~;d:

深海lavenderUID: 2350207

up.

豆豆～UID: 2378384

你养MJ养的比我还猖狂。。。;d:

深海lavenderUID: 2350207

顶.
该死的ACROBAT.诅咒ADOBE公司.:mad

zhoushengyuanlyUID: 2246479

同up

豆豆～UID: 2378384

patpat...

buaa_wangchaoUID: 2179665

顶～

molotokUID: 2430927

Do Docs' Gifts Lead To Unnecessary Prescriptions?

American consumer groups have expressed concern about the way pharmaceutical companies lavish gifts and speaking fees upon doctors. They say this may influence what drugs doctors prescribe. But, according to a recent study published by the organization Consumers International, the situation in the developing world is even more extravagant. The study notes that gifts from drug companies include school fees, cars, even down-payments on homes.

Consumers International says they’ve documented that 50 percent of the drugs in the developing world are what they call irrationally prescribed. This means the drugs are unnecessary, or they’re prescribed in doses that are too large, or expensive drugs are prescribed in place of generics. And money spent on unnecessary medicine in poor countries has a much greater impact on overall health than, say, here in the US. The group worries these over-the-top gifts are at least partly to blame. Plus, they say, this type of behavior violates the written ethical policies of drug companies. Those same companies declined to be involved with the report when it was under development. Now that it’s been published, the self-policing regulatory body of the pharmaceutical industry says it intends to deal with these issues.

[ 本帖最后由 molotok 于 2007-12-27 19:02 编辑 ]