Combating addiction
打击吸毒
Can a vaccine stop drug abuse?
是否有种疫苗能对付毒品滥用?
It may be possible to vaccinate people against addictive drugs
向吸毒者接种疫苗防止毒瘾将成为可能
THE idea of vaccinating drug addicts against their affliction is an intriguing one.
如何消除吸毒者的毒瘾折磨,是个有挑战性的命题。
In principle, it should not be too hard.
从理论上来讲,这并不难。
The immune system works, in part, by making antibodies that are specific to particularsorts of hostile molecule.
只要让免疫系统,产生某种针对这种恶性分子的抗体便可。
Such antibodies recognise and attach themselves to these molecules, rendering themharmless.
这种抗体能识别并紧紧附在毒品分子上,尽可能消灭它们。
Vaccines work by presenting the immune system with novel targets, so that it can learn toreact to them if it comes across them again.
疫苗让免疫系统有了明确的对付目标,系统便能在下次遇到该种病毒时有所反应,将其及时消灭
The problem is that the molecules antibodies recognise and react to are the big ones, suchas proteins, that are characteristic of bacteria, viruses and other infectious agents.
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