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The Journal of Lxpenmental Biology 206. 4393-4412

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Clucose-6-phosphate isomerase

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Chitin

Fig. 1. Biosynthesis of chitin in inseets. The pathway starts with trehalose. the main hemolymph sugar in most inseets. and ends with the chitin polymer. The diagrammatic representation is based on previously published pathways (Kramer and Koga. 1986: Cohen. 2001).