Fig. 6. (A) Storage modulus, (B) tan δ, (C) shear viscosity for intestinal physiological mucus samples and (D) the temperature of the rheological test. The data were digitally extracted from the different sources. Each model is named after the reference number (numbers in brackets) and the type of sample. Before plotting, the data were homogenized in units of measurement to make them comparable. **Data not available.