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. Author manuscript; available in PMC: 2014 Dec 9.
Published in final edited form as: Biomacromolecules. 2013 Nov 22;14(12):4429–4435. doi: 10.1021/bm401356q

Figure 4.

Figure 4

Macrorheological characterization of fresh human CVM at different pH ranges under dynamic oscillatory shear. (A) Elastic modulus (G′) and (B) viscous modulus (G″) for pH 4 (physiological) mucus compared to the same mucus samples adjusted to pH 6–7 and pH 8–9. (C) G′ and (D) G″ for pH 4 mucus compared to the same mucus samples adjusted to pH 1–2. Data represent the average of three independent experiments, where each experiment characterized CVM pooled from at least three donors. * indicates a statistically significant difference at p < 0.05 compared to pH 4 values, across all frequencies probed. Error bars are presented as S.E.M.