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:…Lamirande and Gagnon (2002)
Sulindac sulphid Ras-Raf Interaction – 100 de Lamirande and Gagnon (2002) ZM336372 Raf, competitive inhibition 0.07– 0.007 3 de Lamirande and Gagnon (2002) PD98059 prevents MEK activation by Raf 4–50 50 de Lamirande and Gagnon (2002) U126 inhibits activated MEK…
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