Metzger, S. M., Jones, T. C., Meier, J. I. J., Richter, A., Klassen, M., Olmer, R., Diegmüller, N., Heimsch, K. C., Drosten, C. (2026). Evaluation of a proposed link between the SARS-CoV-2 furin cleavage site and mouse-adapted MERS-coronavirus MA30. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.2601806123