Human parasite
Animal
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Human parasites include various protozoa and worms.
Human parasites are divided into endoparasites, which cause infection inside the body, and ectoparasites, which cause infection superficially within the skin. Wikipedia
Representative species: Ascaris lumbricoides, Plasmodium, Toxoplasma gondii, and more
Length: Head louse: 0.25 – 0.3 cm