![](https://paw.princeton.edu/sites/default/files/styles/portrait_feature/public/images/content/OTC_Opener_EQuad.jpg?itok=Enoyk5fz)
Ricardo Barros
The corridor was nearly empty in the EQuad’s J wing when this image was captured in late February. Empty halls are now the norm as the majority of Princeton’s labs have closed to comply with New Jersey’s stay-at-home order, which aims to prevent the spread of COVID-19.
Photograph by Ricardo Barros