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Close-up of a green glass bottle with a silver cap.
Cochliomyia hominivorax, the New World screw-worm fly, or screw-worm for short, is a species of parasitic fly that is well known for the way in which its larvae (maggots) eat the living tissue.
Steel screw with nut beside it on white background, isolated
Young woman screwing light bulb into lamp at home
A collection of rusty and old screws and nails. Concept of wear and tear, as well as the passage of time. The various sizes and shapes of the screws and nails suggest that they have been used

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