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Phenotypes observed after the injection of mixed (GlcN)2–7 into the fifth instar day 5 of the insect O. furnacalis. Three days after injection with mixed (GlcN)2–7, 60% of the larvae died at the prepupal stage, with the head capsule and the thoracic legs attached to the body (red arrow). Ten days after injection with mixed (GlcN)2–7, 25% of the larvae died with their body shrunk seriously (red arrow). No malformation was found in water-injected control groups.
