One thing that makes SARS-CoV-2, the virus that causes COVID-19, elusive to the immune system is that it is covered in sugars called glycans. Once SARS-CoV-2 infects someone's body, it becomes covered in that person's unique glycans, making it difficult for the immune system to recognize the virus as something it needs to fight. Those glycans also play an important role in activating the virus. Terra Sztain-Pedone, a graduate student, and colleagues in the labs of Rommie Amaro at the University of California, San Diego and Lillian Chong at the University of Pittsburgh, studied exactly how the glycans activate SARS-CoV-2. Sztain-Pedone will present the research on Thursday, February 25 at the 65th Annual Meeting of the Biophysical Society.