3D print of a spike protein of SARS-CoV-2, the virus that causes COVID-19--in front of a 3D print of a SARS-CoV-2 virus particle. On the virus model, the virus surface (blue) is covered with spike proteins (red) that enable the virus to enter and infect human cells. The study, published today in the journal Cell, shows the variation is more infectious in cell cultures under laboratory conditions. Explore further Follow the latest news on the coronavirus (COVID-19) outbreakMore information: Tracking changes in SARS-CoV-2 Spike: evidence that D614G increases infectivity of the COVID-19 virus, Cell (2020). www.cell.com/cell/fulltext/S0092-8674(20)30820-5 Journal information: Cell Tracking changes in SARS-CoV-2 Spike: evidence that D614G increases infectivity of the COVID-19 virus,(2020).