Helminthiasis Toxocara Canis & X28;Also Known As Dog Roundworm& X29; Or Parasitic Worms From Little Dog On Concrete Background, Selective Focus

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also animal background biology canis cause colorful concrete contaminated diseases dog education egg feces first focus granuloma helminth helminthiasis infection infestation invertebrate known learn little material microbiology nature nematoda nematode parasite parasitic parasitology render roundworm science scientific selective sience stage toxocara toxocariasis ugly white wildlife worm worms zoology