Recent Examples on the WebWhile the solvent cells are clearly derived from the exoskeleton membrane cells, the developmental origin of the novel benzoquinone-producing cells is still mysterious.Quanta Magazine, 16 Aug. 2021 Bombardier beetles spew irritating benzoquinones from their abdomens, and fire salamanders spray toxins from their glands over a foot away.National Geographic, 7 Jan. 2020 To create their spray, the beetles combine hydrogen peroxide with hydroquinones, which explodes into an irritating spray of benzoquinone. Jason Daley, Smithsonian, 21 Feb. 2018