https://www.selleckchem.com/pr....oducts/n-butyl-n-4-h
Thus, basing a policy for opening airports on diagnostic testing, even with the best test for COVID-19, has some limits.In December 2019, the first cases of a new contagious disease were diagnosed in the city of Wuhan, the capital of Hubei province in China. Within a short period of time the outbreak developed exponentially into a pandemic that infected millions of people, with a global death toll of more than 500,000 during its first 6 months. Eventually, the novel disease was named coronavirus disease 2019
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