Skip to main content
. Author manuscript; available in PMC: 2010 Feb 27.
Published in final edited form as: Adv Drug Deliv Rev. 2009 Jan 3;61(2):86–100. doi: 10.1016/j.addr.2008.09.012

Figure 4.

Figure 4

Viscosity of various types of human mucus. (A) Dynamic oscillatory viscosity as a function of shear frequency for cervical mucus (red, [37, 138, 201]), nasal mucus (blue, [88–93]), and lung mucus (black, [75, 78, 114, 199, 200]). Solid lines correspond to normal mucus, while dashed lines indicate mucus under disease conditions. The shaded region represents the range of values for all mucus types shown. (B) Steady shear viscosity as a function of shear rate for (a, b) chronic bronchitis mucus (green circle [202] and square [11]), (c) non-ovulatory cervical mucus (red, [70]), (d) normal gastric mucus (black line, [105]), (e) duodenal ulcer mucus (black dashed line, [105]), and (f) tears (blue, [111]). Thin dashed lines indicate the typical range of viscosity values for human mucus suggested by [6]. The thin solid line represents the viscosity of water (10−3 Pa–s).