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    Parasitic tachinid fly (Tachinidae) sleeping on a wild plant. — Stock Photo
    Parasitic tachinid fly (Tachinidae) sleeping on a wild plant.
    Horse skeleton, realistic 3d rendering. — Stock Photo
    Horse skeleton, realistic 3d rendering.
    Head louse on white background, digital illustration. — Stock Photo
    Head louse on white background, digital illustration.
    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
    Ginger boy using light microscope on green grass. — Stock Photo
    Ginger boy using light microscope on green grass.
    Close-up of nursery web spider on blade of grass covered by dew drops. — Stock Photo
    Close-up of nursery web spider on blade of grass covered by dew drops.
    Tapeworms infestation in human intestine, digital illustration. — Stock Photo
    Tapeworms infestation in human intestine, digital illustration.
    Babesia parasites inside red blood cell, computer illustration — Stock Photo
    Babesia parasites inside red blood cell, computer illustration
    Rock beauty fish with black and yellow pattern in water. — Stock Photo
    Rock beauty fish with black and yellow pattern in water.
    Egg of Enterobius vermicularis threadworm containing worm larva, causative agent of enterobiasis, computer illustration. — Stock Photo
    Egg of Enterobius vermicularis threadworm containing worm larva, causative agent of enterobiasis, computer illustration.
    Close-up of flower crab spider on leaves of wild plants. — Stock Photo
    Close-up of flower crab spider on leaves of wild plants.
    Horse anatomy and skeletal system, computer illustration. — Stock Photo
    Horse anatomy and skeletal system, computer illustration.
    Obese boy using binoculars outdoors. — Stock Photo
    Obese boy using binoculars outdoors.
    Dust mites, computer illustration — Stock Photo
    Dust mites, computer illustration
    Head louse on human hair, digital illustration. — Stock Photo
    Head louse on human hair, digital illustration.
    Head louse on white background, digital illustration. — Stock Photo
    Head louse on white background, digital illustration.
    Halictid bee sitting on wild plant branch. — Stock Photo
    Halictid bee sitting on wild plant branch.
    Close-up of devils coach horse beetle with large mandibles. — Stock Photo
    Close-up of devils coach horse beetle with large mandibles.
    Close-up of leaf hopper at edge of green leaf. — Stock Photo
    Close-up of leaf hopper at edge of green leaf.
    Dog silhouette with visible skeleton on blue background, digital illustration. — Stock Photo
    Dog silhouette with visible skeleton on blue background, digital illustration.
    Liver fluke. Computer illustration of adult liver fluke (Fasciola hepatica), parasite of sheep, cattle and humans. Humans ingest fluke larvae by eating infested vegetation — Stock Photo
    Liver fluke. Computer illustration of adult liver fluke (Fasciola hepatica), parasite of sheep, cattle and humans. Humans ingest fluke larvae by eating infested vegetation
    Dog silhouette with red colored spleen on black background, digital illustration. — Stock Photo
    Dog silhouette with red colored spleen on black background, digital illustration.
    Round worms in human intestine, computer illustration. Roundworms, or nematodes, include numerous free-living and pathogenic species — Stock Photo
    Round worms in human intestine, computer illustration. Roundworms, or nematodes, include numerous free-living and pathogenic species
    Liver fluke. Computer illustration of adult liver fluke (Fasciola hepatica), parasite of sheep, cattle and humans. Humans ingest fluke larvae by eating infested vegetation — Stock Photo
    Liver fluke. Computer illustration of adult liver fluke (Fasciola hepatica), parasite of sheep, cattle and humans. Humans ingest fluke larvae by eating infested vegetation
    Immature parasitic trematode — Stock Photo
    Immature parasitic trematode
    Liver fluke. Computer illustration of adult liver fluke (Fasciola hepatica), parasite of sheep, cattle and humans. Humans ingest fluke larvae by eating infested vegetation — Stock Photo
    Liver fluke. Computer illustration of adult liver fluke (Fasciola hepatica), parasite of sheep, cattle and humans. Humans ingest fluke larvae by eating infested vegetation
    Polar bear lying on the ice — Stock Photo
    Polar bear lying on the ice
    Head louse on human hair, digital illustration. — Stock Photo
    Head louse on human hair, digital illustration.
    Dog anatomy with visible organs on white background, digital illustration. — Stock Photo
    Dog anatomy with visible organs on white background, digital illustration.
    Horse skeleton model with detailed Triceps muscle, digital illustration. — Stock Photo
    Horse skeleton model with detailed Triceps muscle, digital illustration.
    Dog anatomy with visible organs on black background, digital illustration. — Stock Photo
    Dog anatomy with visible organs on black background, digital illustration.
    Dog silhouette with visible skeleton on blue background, digital illustration. — Stock Photo
    Dog silhouette with visible skeleton on blue background, digital illustration.
    Bumblebee robberfly (Laphria sp.). — Stock Photo
    Bumblebee robberfly (Laphria sp.).
    Head louse on human hair, digital illustration. — Stock Photo
    Head louse on human hair, digital illustration.
    Horse skeleton model with detailed Zygomaticus brachii muscle, digital illustration. — Stock Photo
    Horse skeleton model with detailed Zygomaticus brachii muscle, digital illustration.
    Group of Trichomonas hominis protozoan parasites, digital illustration. — Stock Photo
    Group of Trichomonas hominis protozoan parasites, digital illustration.
    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.
    Full dog musculature with internal organs, digital illustration. — Stock Photo
    Full dog musculature with internal organs, digital illustration.
    Hydatid disease in liver, cystic echinococcosis, Computer illustration — Stock Photo
    Hydatid disease in liver, cystic echinococcosis, Computer illustration
    Tick showing its mouthparts — Stock Photo
    Tick showing its mouthparts
    Grivet monkey sitting on rock in sunlight — Stock Photo
    Grivet monkey sitting on rock in sunlight
    Echinococcus granulosus hydatid cyst, computer illustration — Stock Photo
    Echinococcus granulosus hydatid cyst, computer illustration
    Colored scanning electron micrograph of coccoliths calcium carbonate plates from coccolithophore algal organisms. — Stock Photo
    Colored scanning electron micrograph of coccoliths calcium carbonate plates from coccolithophore algal organisms.
    Close-up of fungus infection on grasshopper insect. — Stock Photo
    Close-up of fungus infection on grasshopper insect.
    Dragonflies on a plant stem — Stock Photo
    Dragonflies on a plant stem
    Rich marine life in tropical coral sea water. — Stock Photo
    Rich marine life in tropical coral sea water.
    Colored scanning electron micrograph of predatory ciliate protozoan Loxophyllum. — Stock Photo
    Colored scanning electron micrograph of predatory ciliate protozoan Loxophyllum.
    Ground beetle in black and purple, detailed portrait. — Stock Photo
    Ground beetle in black and purple, detailed portrait.
    Frog hopper and few parasitic red mites nymphs on plant. — Stock Photo
    Frog hopper and few parasitic red mites nymphs on plant.
    Tick biting skin — Stock Photo
    Tick biting skin
    Colored digital illustration of parasitic dust mites. — Stock Photo
    Colored digital illustration of parasitic dust mites.
    Digger bee (Habropoda sp.) sleeping on a branch. Its turquoise compound eyes are visible here. — Stock Photo
    Digger bee (Habropoda sp.) sleeping on a branch. Its turquoise compound eyes are visible here.
    Arteries in transparent dog body, anatomical computer illustration. — Stock Photo
    Arteries in transparent dog body, anatomical computer illustration.
    Close-up of two horses looking in camera with fisheye effect on green meadow under blue sky with clouds. — Stock Photo
    Close-up of two horses looking in camera with fisheye effect on green meadow under blue sky with clouds.
    Head louse on white background, digital illustration. — Stock Photo
    Head louse on white background, digital illustration.
    Honey bee on honeycomb — Stock Photo
    Honey bee on honeycomb
    Snouted treefrog (Scinax fuscovarius) eye, close-up. This species is widespread in southern, south-eastern and central Brazil as well as in eastern Bolivia, Paraguay, northern Argentina, and northern Uruguay — Stock Photo
    Snouted treefrog (Scinax fuscovarius) eye, close-up. This species is widespread in southern, south-eastern and central Brazil as well as in eastern Bolivia, Paraguay, northern Argentina, and northern Uruguay
    Adult Pubic louse on hair — Stock Photo
    Adult Pubic louse on hair
    Full dog anatomy with skeleton and internal organs, digital illustration. — Stock Photo
    Full dog anatomy with skeleton and internal organs, digital illustration.
    Plankton. Coloured scanning electron micrograph (SEM) of plankton containing mainly Ceratium dinoflagellates. A few diatoms are also present. Dinoflagellates are unicellular protozoans — Stock Photo
    Plankton. Coloured scanning electron micrograph (SEM) of plankton containing mainly Ceratium dinoflagellates. A few diatoms are also present. Dinoflagellates are unicellular protozoans