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

Table 3

Width, height, and roughness of the collagen self-assembly in different metal ions concentration.

Parameter	Concentration of metal ions
	Category	Control (0 M)	0.1 M	0.2 M	0.3 M
Width/nm	CaCl2
	MgCl2
Height/nm	CaCl2
	MgCl2
Roughness/nm	CaCl2
	MgCl2

Results (n = 20) are shown as mean ± SE; means without common superscripts (a–d) in row are different (P < 0.05). Means without common superscripts (x-y) in column within a parameter are different (P < 0.05).