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:It has recently been demonstrated that deguelin effects on GSK-3b dephosphorylation cause the restoration of its ability to prime b-catenin degradation, resulting in the destabilization of free b-catenin, which is a critical step in Wnt signaling in cancer cells [33].
Category: