Graphene oxide nanofilm and the addition of l-glutamine can promote development of embryonic muscle cells

Table 1 The comparison of the surface roughness between the plastic culture dish and the same plate covered by graphene oxide nanofilm (nGO), measured by atomic force microscopy

The parameters of roughness (nm)	Surface
The parameters of roughness (nm)	Plastic plate	nGO
Maximum height of the roughness	155 ± 37.4	20.45 ± 7.33
Maximum roughness valley depth	57.8 ± 16.11	13.7 ± 5.42
Average roughness	7.2 ± 2.62	1.8 ± 0.43
Root mean square roughness	13.3 ± 3.73	2.4 ± 0.71

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