The document summarizes a study on the kinetics and effects of macromolecular crowding on cationic antimicrobial peptides (CAMPs). The study found: 1) NA-CATH showed superior rapid killing of bacteria compared to truncated L- and D-ATRA-1A peptides. 2) The presence of the polysaccharide crowding agent Ficoll 70 significantly increased the potency of CAMPs, while the polymer crowding agent PEG decreased potency. 3) This suggests the increased potency with Ficoll 70 is due to interactions with polysaccharide moieties rather than just molecular crowding effects.