Increased expression of ALOX5 and ACE2/TMPRSS2 receptor system for SARS-CoV-2 infection in individuals with COVID-19 in the DM group. Expressions of ALOX5 (A), ACE2 (B), TMPRSS2 (C), FURIN (D), and CD147 (E) in PBMCs from DM and NDM patients. Data are means. *P < 0.05, **P < 0.01.