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 addition, homozygous BG00836 animals displayed defects in eclosion and wing expansion (Table 1), two behaviors under regulation by peptidergic neurons (Park et al. 2003; Peabody et al. 2008).
Category: