Table 2.

Characteristics of pooled endotracheal tube mucus stock used for rheology

Characteristic	Pooled Value
Sample volume, µL	2,250
% Solids	4.6
[Na+ + K+]mucus/[Na+ + K+]plasma	1.01
Mucins, µg/mL	3,720
Molecular mass, kDa	2.42 × 109
Rg, nm	443.0

Plasma Na⁺ and K⁺ concentrations ([Na⁺ + K⁺]) were taken to be 140 and 4 mM, respectively. R_g, radius of gyration.