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    Close-up of nomada bee at tip of plant branch. — Stock Photo
    Close-up of nomada bee at tip of plant branch.
    White-throated kingfisher with tortoise in beak on tree branch. — Stock Photo
    White-throated kingfisher with tortoise in beak on tree branch.
    Hydatid disease in liver caused by larvae of parasitic tapeworm Echinococcus multilocularis, computer illustration — Stock Photo
    Hydatid disease in liver caused by larvae of parasitic tapeworm Echinococcus multilocularis, computer illustration
    Head louse on human hair, digital illustration. — Stock Photo
    Head louse on human hair, digital illustration.
    Eurasian spoonbill feeding in wetland, close-up. — Stock Photo
    Eurasian spoonbill feeding in wetland, close-up.
    Adult Honeybee mite — Stock Photo
    Adult Honeybee mite
    Antarctic fur seal (Arctocephalus gazella) on rocky coast — Stock Photo
    Antarctic fur seal (Arctocephalus gazella) on rocky coast
    Cluster fly sitting on dried wildflower stem. — Stock Photo
    Cluster fly sitting on dried wildflower stem.
    Colored scanning electron micrograph of predatory ciliate protozoan Loxophyllum. — Stock Photo
    Colored scanning electron micrograph of predatory ciliate protozoan Loxophyllum.
    Head louse on human hair, digital illustration. — Stock Photo
    Head louse on human hair, digital illustration.
    Arteries in transparent dog body, anatomical computer illustration. — Stock Photo
    Arteries in transparent dog body, anatomical computer illustration.
    Nomada bee sitting at tip of plant branch. — Stock Photo
    Nomada bee sitting at tip of plant branch.
    Maggots of house fly — Stock Photo
    Maggots of house fly
    Digital illustration of parasitic hookworms Ancylostoma duodenale on black background. — Stock Photo
    Digital illustration of parasitic hookworms Ancylostoma duodenale on black background.
    Close-up of furrow spider on tip of wild plant stem. — Stock Photo
    Close-up of furrow spider on tip of wild plant stem.
    Colored digital illustration of parasitic dust mites. — Stock Photo
    Colored digital illustration of parasitic dust mites.
    Horse skeleton in transparent silhouette on black background, computer illustration. — Stock Photo
    Horse skeleton in transparent silhouette on black background, computer illustration.
    Structure of dog vascular system with colorful blood vessels in transparent body, computer illustration. — Stock Photo
    Structure of dog vascular system with colorful blood vessels in transparent body, computer illustration.
    Flatworm Schistosome fluke — Stock Photo
    Flatworm Schistosome fluke
    Babesia parasites inside red blood cell, computer illustration — Stock Photo
    Babesia parasites inside red blood cell, computer illustration
    Digital illustration of multiple threadworms in human intestine. — Stock Photo
    Digital illustration of multiple threadworms in human intestine.
    Adult female mosquito — Stock Photo
    Adult female mosquito
    Enterobius vermicularis threadworm eggs containing worm larvae, causative agent of enterobiasis, computer illustration. — Stock Photo
    Enterobius vermicularis threadworm eggs containing worm larvae, causative agent of enterobiasis, computer illustration.
    Horse skeleton model with detailed Teres minor muscle, digital illustration. — Stock Photo
    Horse skeleton model with detailed Teres minor muscle, digital illustration.
    Rosemary beetle (Chrysolina americana) on a branch. — Stock Photo
    Rosemary beetle (Chrysolina americana) on a branch.
    Close-up of dagger fly on plantago lanceolata plant. — Stock Photo
    Close-up of dagger fly on plantago lanceolata plant.
    Starfish skeleton on white background. — Stock Photo
    Starfish skeleton on white background.
    Mexican redknee tarantula — Stock Photo
    Mexican redknee tarantula
    Eggs of parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Eggs of parasitic worm Trichuris trichiura, computer illustration
    Froghopper nymph building defensive foam structure on plant. — Stock Photo
    Froghopper nymph building defensive foam structure on plant.
    Close-up of ladybug larva in pupa stage on stem. — Stock Photo
    Close-up of ladybug larva in pupa stage on stem.
    Horse skeleton model with detailed Transversus thoracis muscle, digital illustration. — Stock Photo
    Horse skeleton model with detailed Transversus thoracis muscle, digital illustration.
    Close-up of cluster fly covered by dew drops on wild plant. — Stock Photo
    Close-up of cluster fly covered by dew drops on wild plant.
    Dog silhouette with red colored gallbladder on black background, digital illustration. — Stock Photo
    Dog silhouette with red colored gallbladder on black background, digital illustration.
    Hoverfly insect perched on dried wildflower. — Stock Photo
    Hoverfly insect perched on dried wildflower.
    Cross section of nautilus shell with spiral structure. — Stock Photo
    Cross section of nautilus shell with spiral structure.
    Close-up of ladybug larva in pupa stage on stem. — Stock Photo
    Close-up of ladybug larva in pupa stage on stem.
    Dog silhouette with visible skeleton on white background, digital illustration. — Stock Photo
    Dog silhouette with visible skeleton on white background, digital illustration.
    Orange knee sawfly sitting on plant stem. — Stock Photo
    Orange knee sawfly sitting on plant stem.
    Entomopathogenic fungus infected fly at tip of leaf. — Stock Photo
    Entomopathogenic fungus infected fly at tip of leaf.
    Close-up view of tick on white background. — Stock Photo
    Close-up view of tick on white background.
    Adult female mosquito — Stock Photo
    Adult female mosquito
    Silver Y moth caterpillar feeding on honeysuckle leaf. — Stock Photo
    Silver Y moth caterpillar feeding on honeysuckle leaf.
    Parasitic louse on human head skin, digital illustration. — Stock Photo
    Parasitic louse on human head skin, digital illustration.
    Colorful leaf roller weevil sitting on plant. — Stock Photo
    Colorful leaf roller weevil sitting on plant.
    Horse skeleton model with detailed Triceps brachii muscle, digital illustration. — Stock Photo
    Horse skeleton model with detailed Triceps brachii muscle, digital illustration.
    Illustration of schistosoma blood fluke flatworm on black background. — Stock Photo
    Illustration of schistosoma blood fluke flatworm on black background.
    Head louse on white background, digital illustration. — Stock Photo
    Head louse on white background, digital illustration.
    Digital illustration of parasitic hookworms Ancylostoma duodenale on white background. — Stock Photo
    Digital illustration of parasitic hookworms Ancylostoma duodenale on white background.
    Arteries in transparent dog body, anatomical computer illustration. — Stock Photo
    Arteries in transparent dog body, anatomical computer illustration.
    Orb weaver spider (Araneus diadematus) camouflaged on a foxtail plant. — Stock Photo
    Orb weaver spider (Araneus diadematus) camouflaged on a foxtail plant.
    Head louse on white background, digital illustration. — Stock Photo
    Head louse on white background, digital illustration.
    Babesia parasites inside red blood cell, computer illustration — Stock Photo
    Babesia parasites inside red blood cell, computer illustration
    Recently hatched shieldbug nymphs and eggs on plant. — Stock Photo
    Recently hatched shieldbug nymphs and eggs on plant.
    Structure of dog skeleton, rear view, computer illustration. — Stock Photo
    Structure of dog skeleton, rear view, computer illustration.
    Anatomy of dog kidneys in transparent body, computer illustration. — Stock Photo
    Anatomy of dog kidneys in transparent body, computer illustration.
    Horse skeleton in transparent silhouette on black background, computer illustration. — Stock Photo
    Horse skeleton in transparent silhouette on black background, computer illustration.
    Close-up of millipede in defensive spiral position on wild plant. — Stock Photo
    Close-up of millipede in defensive spiral position on wild plant.
    Head louse on human hair, digital illustration. — Stock Photo
    Head louse on human hair, digital illustration.
    Six spot burnet moth on common thistle wildflower. — Stock Photo
    Six spot burnet moth on common thistle wildflower.