David GrimmPHILADELPHIA—The main door of Sunny Shin’s lab is plastered with pictures of happier times: Shin photoshopped onto the cover of a Wheaties box, grad students chomping on corn cobs, a group photo on the lawn of a beach house. “We used to do a yearly retreat to the Jersey Shore,” says Shin, a midcareer microbial immunologist here at the University of Pennsylvania (UPenn). “Hopefully we can go back in 2022.”When the COVID-19 pandemic hit, Shin oversaw 12 people: seven Ph.D.