Get a gene, put it in a plasmid, get that plasmid expressed in a host, could even be a bacterial host,right?
把一个基因导入一个质粒,让质粒在宿主中表达,这个宿主甚至可以是细菌,对吧
It's our host, it's our mother,
她毕竟是我们的主人,我们的母亲,
The only way that we knew how to grow it reliably was to grow it in its natural host: cows.
那目前我们所知道的唯一途径就是,利用它的自然宿主,奶牛
It seemed I had a whole host of memories going back to 1750 in England and that I was in San Francisco now only in another life and in another body.
似乎全部记忆都回到了1750年的英格兰,而现在在圣弗兰西斯科的我则是另一个人,在另一种生活里。
By extending your time horizon to three years, or four years,or five years, it opens up a whole host of investment opportunities that aren't available to people that are playing this silly,short-term game.
只有通过将投资延长至三年,四年乃至五年,才会出现大量的获利机会,沉迷于愚蠢的短线操作,是无法得到这些机会的
Took it out of the virus completely, cloned it into a plasmid, that plasmid was expressed in a foreign host, in this case it was expressed in yeast cells.
将基因从病毒中完全提取出来,并克隆制成质粒,该质粒在外来宿主中表达,此例中质粒在酵母细胞中表达
Otherwise you could have a squirrel host-- I'm using squirrels, because I think that's funnier than other animals to think of— but it could be any potential host, right?
否则松鼠就会变成宿主,我拿松鼠举例,是因为我觉得它比别的动物更有趣,但潜在宿主可以是任何动物,对吧
Take a plasmid, cut it open, insert a gene that we want into the plasmid, and then put that plasmid in a host cell, and let the host replicate it.
取一个质粒,把它切开,把目标基因放进去,然后把这个质粒植入到宿主细胞,让宿主来进行复制
It's foreign, it's not part of the host or not a normal part of the host.
所以它成了外源物,外源物不是宿主的一部分,至少不是正常的一部分
Now in this case the host - you want the host not only to replicate all the DNA, you want it also to express the gene.
而这种情况下宿主--,你不只希望宿主复制基因,同时也想使之表达基因
Some words that are useful in this discussion, a 'host'. A host is the organism that you're interested in defending and it could be you or me or some typical person.
讨论中会用到一些词,宿主 宿主是,你对其免疫反应感兴趣的生物体,可以是你我,或者其他人
So, when the right signal is received, the right T-cell finds your host cell with a foreign virus in it, the first thing that happens is that this T-cell becomes activated and it starts reproducing, making more copies of itself.
所以 当接收到正确的信号,恰当的T细胞寻觅到,感染外源病毒的细胞时,首先发生的是,T细胞被激活并开始增殖,制造更多自身拷贝
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