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:After testis irradiation, hypomethylation of retrotransposed interspersed repeat elements (LINEs and SINEs) was found in the offspring (Filkowski et al., 2010) next to lower levels of the methylated CpG binding protein MeCP2 and the DNA homologous recombination
Assisted reproduction and epigenetic…
Category: