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Covid-19
SARS-CoV-2is following the evolutionary rule book
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The answers to the first of these questions lie in the
variants
’ genomes. cog-uk’s investigation of b.1.1.7 shows that it differs meaning fully from the original version of sars-cov-2 in 17 places. That is a lot. Moreover, several of these differences are in the gene for
spike
, the protein by which coronaviruses attach themselves to their cellular
prey
. Three of the spike mutations particularly caught the researchers’ eyes.
something that is slightly different from the usual form of something
变体,变化形式
:
•
This game is a variant of netball.
这种运动是无挡板篮球的一种变化形式。
•
a variant on the typical Hollywood hero
典型的好莱坞英雄的变身
something long and thin with a sharp point, especially a pointed piece of metal
尖状物
;
金属钉状物
an animal, bird etc that is hunted and eaten by another animal
被〔其他动物〕捕食的动物,猎物
; SYNpredator
•
a tiger stalking its prey
潜行跟踪猎物的老虎
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