Bromelain inhibits SARS-CoV-2 infection via targeting ACE-2, TMPRSS2, and spike protein. - Sagar S; Rathinavel AK; Lutz WE; Struble LR; Khurana S; Schnaubelt AT; Mishra NK; Guda C; Palermo NY; Broadhurst MJ; Hoffmann T; Bayles KW; et al. (Clinical and translational medicine, 2021)