Comparison of #SARSCoV2 cultures in well-differentiated, primary epithelial cells in air-liquid interface from 12 different mammals species. I'm guessing the 1 paragraph & table of Methods on the cell culture has like months of work behind it.
(fig1: left 33C, right 37C) Since these types of cultures can be tricky and susceptible to poor cell quality they used influenza A (human isolate) and influenza D (bovine isolate) as positive controls for virus infection.