The phrase "appearance of difference" is correct and usable in written English.
It can be used when discussing how something may seem different or distinct, even if the actual differences are minimal or superficial.
Example: "The appearance of difference between the two products is misleading, as they function identically."
Alternatives: "seeming difference" or "illusion of difference".
The 1st and 2nd instar stages also showed the first appearance of differences in oxidoreductase activity, and increases in the glycan and lipid metabolism pathways.
Furthermore, different model organisms are amenable to distinct forms of experimentation, which may result in the appearance of differences in CBC function.
The early appearance of differences in troponin prompted us to monitor the levels of inflammatory mediators in blood and heart 30 min and 3 h after I/R.
However, the relative proportions of the three types were similar in the infants sampled at six and 12 months, making it unlikely that the appearance of a difference at 12 months was due to a difference in the type of PM among the PM+ infants.
The Song Confucianists, by delineating a set of moral principles that were said to originate in nature and be manifest in all things, sought to establish the essential unity of natural laws, physical existence, and human conduct across time and space in spite of the appearance of cultural difference and historical change.
The appearance of redox difference spectra derived from solubilized extracts of these cells was quite similar to those from chromatophore membranes of phototrophic bacteria expressing a reaction center tetraheme cytochrome, like for instance Allochromatium vinosum [33] or Rhodoferax fermentans [34].
Two other blinded investigators reviewed the results and recalculated the data on the appearance of any difference.
Thus, the appearance of the difference might be related to the severity of kidney damage at later stages of diabetic nephropathy.
On the appearance of any difference a third and fourth blinded investigator will analyse the results and will recalculate the case.
Based on these observations, the prevalence of depression did not differ in the two groups at baseline, but one cannot rule out the appearance of a difference during the follow-up, a possibility we could not examine.
