Observing Effects of Calcium/Magnesium Ions and pH Value on the Self-Assembly of Extracted Swine Tendon Collagen by Atomic Force Microscopy

Table 2

Width, height, and roughness of the collagen self-assembly at different pH values.

Parameter	pH value
	pH = 5.7	pH = 7.0	pH = 8.0	pH = 9.2
Width
Height/nm
Roughness/nm

Results (n = 20) are shown as mean ± SE. Means without common superscripts (a–d) in row are different (P < 0.05).