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How to sign: a fully differentiated structural and functional unit in an animal that is specialized for some particular function
Categories: body part
Within this category: ovipositor, ctene, wing, foot, sucker, stinger, contractile organ, primordium, vital organ, effector, external organ, internal organ, sense organ, tongue, speech organ, lens, gland, organelle, end organ, reproductive organ, target organ, taret organ, erectile organ