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Typical function of hookworms

Which is the typical function of hookworms related to the way they get food and discover the host?

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Both Ancylostoma duodenale and Necator americanus have a mouthpart with hooks or “teeth” which aid the fixation of parasite in the human intestine wall and facilitate the tissue damage essential to drain blood from host. The structures are evolutionary adaptations for parasitic way of life of such animals.

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