SARS1 and Alzheimer disease: In the AD group, we also detected upregulation of the following six proteins that are involved in protein synthesis: EIF3L, ERO1-like protein alpha (ERO1α), HNRNPA2B1, serine-tRNA ligase cytoplasmic (SYSC), ribonuclease T2 (RNT2), and ribonuclease 4 (RNAS4).