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:In agreement, repression of Fgf signalling results in a similar but much stronger phenotype compared to down-regulation of Satb1, with all ICM cells expressing EPI lineage markers (Frankenberg et al., 2011; Yamanaka et al., 2010).
Category: