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:To determine if the missing protein coding genes (belonging to the last two groups) were actually present in the draft sequence but
Data is shown for six sequencing technologies; omitted is Illumina PacBio for which there are currently only eight genome projects without any missing genes. doi:10.1371/journal.pone.0048837.g006
PLOS ONE | www.plosone.org 5 December 2012 | Volume 7 | Issue 12 | e48837
had not been predicted by Prodigal, tBLASTn was used to search for those genes in the draft contigs.
Category: