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:Sequences include those for AcMNPV (7), Orgyia pseudotsugata MNPV (OpMNPV) (3), BmNPV (25), LdMNPV (40), SeMNPV (37), XcGV (30), PxGV (28), HaSNPV G4 (13), Helicoverpa armigera NPV (HaNPV) (GenBank accession number NC_003094), SpltMNPV (50), CpGV (46), CuniNPV (2), E.
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