If we understand correctly, the reviewer’s argument, i.e., a reduction in RNA when the cells were cultured in the presence of HSA may be due to the HSA’s RNA-hydrolyzing activity, requires that HSA contacts the RNA that will be hydrolyzed.
Cefiderocol is a cidal antibiotic. It would be of great interest if for the key results the authors would also provide MBC and / or time-resolved kill-curves. I believe this kind of data would be of great relevance for assessing the clinical relevance of the observed effects.