New Results Yeast-Expressed SARS-CoV Recombinant Receptor-Binding Domain (RBD219-N1) Formulated with Alum Induces Protective Immunity and Reduces Immune Enhancement Wen-Hsiang Chen, Xinrong Tao, Bi-Hung Peng, Jeroen Pollet, Ulrich Strych, Maria Elena Bottazzi, Peter J. Hotez, Sara Lustigman, Lanying Du, Shibo Jiang, Chien-Te K. Tseng doi: https://doi.org/10.1101/2020.05.15.098079