One of the essential factors the COVID-19 virus needs to enter a host is a receptor on a human cell — a place where the universally recognized spike protein can latch onto the cell surface, pierce it, disgorge its infectious contents, and replicate. Without a receptor, there is no replication. Without replication, there is no infection. Researchers in Princeton University’s Department of Chemistry and the Department of Molecular Biology have used a cellular mapping technology called µMap, introduced just two years ago by the MacMillan Lab, to uncover eight previously unknown entry points of interest for the spike protein. To read the full story.