Figure 2. AFM aspects of the scanned surfaces where changes in topographical features can be observed:

(a) as-hydrophilic fiber.
(b) 5-minute surfactant immersion.
(c) 10-minute immersion.
(d) 12-minute immersion.

The decrease in superficial roughness indicates lysozyme deposition. Ridges observed after 12 min indicate excess of deposited enzyme.