Evaluate the collective function of references cited together in a given text segment.
Classify their combined role into one of the following categories: 'method', 'background', or 'result'.

Text:…be.oxfordjournals.org/
D ow nloaded from
the fact that in mammals many UCEs serve as developmental enhancers (de la Calle-Mustienes et al. 2005; Woolfe et al. 2005; Pennacchio et al. 2006; Visel et al. 2008) prompted us to consider a plausible role of Drosophila UCEs in transcriptional regulation.
Category: