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O. undecimdonta worms and components of its bioluminescence system. (A) The fireworm in daylight and in the dark. (B) Light emission of lyophilized worms in water. (C) NMR tube with the purified oxyluciferin (Green), visible light. (D) Fluorescence of Green, UV light. (E) NMR tube with the purified product of nonenzymatic oxidation of luciferin (Pink), visible light.
