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A friend of mine, who works in biochemistry and genetics, said the PCR test amplifies the signal of that part of the DNA which encodes for the spike proteins on the surface of the virus. She said, it's because these are the most conserved part, since they have to always be compatible to human lung cell surfaces which arguably don't change too much from generation to generation. I am not convinced that SARS CoV II signal will not have an overlap with the common cold (another corona virus) and others which have the same type of binding spike proteins, because they infect lung cells as well.
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[–] AssumingControl 0 points 2 points 2 points (+2|-0) ago
A friend of mine, who works in biochemistry and genetics, said the PCR test amplifies the signal of that part of the DNA which encodes for the spike proteins on the surface of the virus. She said, it's because these are the most conserved part, since they have to always be compatible to human lung cell surfaces which arguably don't change too much from generation to generation. I am not convinced that SARS CoV II signal will not have an overlap with the common cold (another corona virus) and others which have the same type of binding spike proteins, because they infect lung cells as well.