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Impact of exposure on ciliary beating functionality. Ciliary beating frequency was assessed longitudinally before exposure, immediately after exposure (0 h), and 24 h and 48 h post-exposure to the diluted 3R4F CS or undiluted test mix, base, or carrier aerosols for 28 min (112 puffs). a Weighted frequency (Hz); b dominant frequency (Hz). NA not applicable; PBS phosphate-buffered saline; PE post-exposure; nic nicotine
