An important question exists regarding exactly what should be expected to be replicated in order that the results of the original study might be considered to be verified. Some argue that the original data should be replicated, the relative density of splodges on a gel, for example. It could also be argued, however, that it is the phenomenon itself, not the data, that need be replicated for verification purposes. This issue will be discussed in detail in the section dealing with trade-association science.