https://www.selleckchem.com/pr....oducts/gs-441524.htm
COVID-19 virus has been spreading worldwide for more than a year. At present, the situation of the new crown pneumonia epidemic remains full of tension and uncertainty. It is of concern is that the worst outbreak in the world is in the United States. The total number of confirmed new cases of COVID-19 and the total number of new deaths in the United States have entered their second and third cyclical peaks since the White House announced the "Open America Again" guidelines on April 16, 2020, and the start of the US presidential electi