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发表于 2021-2-22 09:07
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本帖最后由 fiony 于 2021-2-22 10:11 编辑
excite 发表于 2021-2-22 09:49
如果选不了辉瑞,可以等等看其他两种疫苗
辉瑞是效果更好吗?大神能解释一下疫苗有什么区别吗?下面的字我认识,但是还是不明白。
感觉是RNA和DNA的区别,还有就是辉瑞貌似会同时产生T细胞和B细胞。生物小白,完全不知道自己在说啥。。。
https://www.abc.net.au/news/2021 ... 9-vaccines/13048284
For the Pfizer vaccine, scientists have created a piece of mRNA — or messenger ribonucleic acid — that contains all the instructions a cell needs to create the protein that identifies coronavirus.
Once the mRNA is inside the cell, its machinery produces the target protein, displays it on the surface of the cell, and as a result the body's immune system creates T-cells and B-cells that now know what to look out for.
The AstraZeneca vaccine uses a weakened virus to deliver the instructions into our cells.
The scientists working on this vaccine have inserted a piece of genetic code, this time DNA, into the code of a similar virus that has been altered so it cannot cause disease.
As with the Pfizer vaccine, when this one enters our cells, it teaches them to make the spike protein and shows it to the immune system so the T-cells know how to neutralise it when they next see it. |
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