claim: cox-1 antitrypsin inhibits sars-cov-2 infection
evidence_1: our findings show that endogenous α1-at restricts sars-cov-2 and repurposes α1-at-based drugs for covid-19 therapy.", "to identify factors of the respiratory tract that suppress sars-cov-2, we screened a peptide/protein library derived from bronchoalveolar lavage, and identified α1-antitrypsin (α1-at) as specific inhibitor of sars-cov-2.", "α1-at targets the viral spike protein and blocks sars-cov-2 infection of human airway epithelium at physiological concentrations.")