Definition of "procuticle" []

• The major portion of the exoskeleton of an insect or arthropod. (noun)

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• "The envelope (env) is the outermost layer, separated by the bipartite epicuticle (epi) from the innermost procuticle (pro)."
• "The three histologically distinct layers, envelope (env), epicuticle (epi) and procuticle (pro) are established (B)."
• "An ordered chitin-protein matrix constitutes the innermost procuticle."