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. 2014 Apr 1;5:121. doi: 10.3389/fphys.2014.00121

Figure 1.

Figure 1

Overview of FAC analog patterns in insects. 1, glutamine conjugates; 2, glutamic acid conjugates; 3, hydroxylated FACs. All FAC-containing species had glutamine conjugates (1) in common, and the evolutionarily earliest species in Lepidoptera had only this type of FACs, suggesting this might be the evolutionarily older FACs. ++: major components, +: components constantly detected, −: not detected. *: insect species used in this study.