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    Head louse on human hair, digital illustration. — Stock Photo
    Head louse on human hair, digital illustration.
    Close-up of wood boaring beetle portrait outdoors. — Stock Photo
    Close-up of wood boaring beetle portrait outdoors.
    Close-up of thick legged hoverfly on dried wild plant. — Stock Photo
    Close-up of thick legged hoverfly on dried wild plant.
    Dog heart, digital illustration. — Stock Photo
    Dog heart, digital illustration.
    Scanning electron micrograph (SEM) of a copepod (subclass Copepoda). — Stock Photo
    Scanning electron micrograph (SEM) of a copepod (subclass Copepoda).
    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
    Silver Y moth caterpillar feeding on honeysuckle plant leaf. — Stock Photo
    Silver Y moth caterpillar feeding on honeysuckle plant leaf.
    Close-up of bumble bee scarab beetle sleeping on wildflower. — Stock Photo
    Close-up of bumble bee scarab beetle sleeping on wildflower.
    Small white butterfly on fresh stem. — Stock Photo
    Small white butterfly on fresh stem.
    Rose chafer (Cetonia aurata) on a branch. — Stock Photo
    Rose chafer (Cetonia aurata) on a branch.
    Stomach infected with parasitic nematode worms — Stock Photo
    Stomach infected with parasitic nematode worms
    Close-up of tortoise beetle frontal portrait. — Stock Photo
    Close-up of tortoise beetle frontal portrait.
    Minor beefly (Bombylius minor) on a wild flower head. — Stock Photo
    Minor beefly (Bombylius minor) on a wild flower head.
    Structure of dog skeleton, cropped, computer illustration. — Stock Photo
    Structure of dog skeleton, cropped, computer illustration.
    Coloured scanning electron micrograph (SEM) of a tardigrade (Macrobiotus sp.), or water bear. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a tardigrade (Macrobiotus sp.), or water bear.
    Lioness looking at camera — Stock Photo
    Lioness looking at camera
    Tiger moth perched on dried leaf. — Stock Photo
    Tiger moth perched on dried leaf.
    True dung beetle (Onthophagus fissicornis). — Stock Photo
    True dung beetle (Onthophagus fissicornis).
    Spotted eye hoverfly in detailed portrait shot. — Stock Photo
    Spotted eye hoverfly in detailed portrait shot.
    Damselfly with blue eyes — Stock Photo
    Damselfly with blue eyes
    Juvenile red fox standing on rock in wild. — Stock Photo
    Juvenile red fox standing on rock in wild.
    Flatworm Schistosome fluke — Stock Photo
    Flatworm Schistosome fluke
    Full dog musculature with internal organs, digital illustration. — Stock Photo
    Full dog musculature with internal organs, digital illustration.
    Broad nosed weevil on green grass blade. — Stock Photo
    Broad nosed weevil on green grass blade.
    Echinococcosis multilocularis hydatid cyst, computer illustration — Stock Photo
    Echinococcosis multilocularis hydatid cyst, computer illustration
    Grivet monkey sitting on tree branch. — Stock Photo
    Grivet monkey sitting on tree branch.
    Babesia parasites inside red blood cell, computer illustration — Stock Photo
    Babesia parasites inside red blood cell, computer illustration
    Full dog anatomy with internal organs, digital illustration. — Stock Photo
    Full dog anatomy with internal organs, 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
    Tapeworms infestation in human intestine, digital illustration. — Stock Photo
    Tapeworms infestation in human intestine, digital illustration.
    Obese boy using binoculars outdoors. — Stock Photo
    Obese boy using binoculars outdoors.
    Group of Trichomonas hominis protozoan parasites, digital illustration. — Stock Photo
    Group of Trichomonas hominis protozoan parasites, digital illustration.
    Seven spot ladybird sitting on wild plant. — Stock Photo
    Seven spot ladybird sitting on wild plant.
    Wheat stink bug walking on wheat plant. — Stock Photo
    Wheat stink bug walking on wheat plant.
    Brown rose chafer (Cetonia aurata) on a lichen covered branch. — Stock Photo
    Brown rose chafer (Cetonia aurata) on a lichen covered branch.
    Structure of dog vascular system with colorful blood vessels in transparent body, cropped, computer illustration. — Stock Photo
    Structure of dog vascular system with colorful blood vessels in transparent body, cropped, computer illustration.
    Dust mite on skin surface — Stock Photo
    Dust mite on skin surface
    Aphid, light micrograph — Stock Photo
    Aphid, light micrograph
    Horse skeleton model with detailed Sternocephalicus muscle, digital illustration. — Stock Photo
    Horse skeleton model with detailed Sternocephalicus muscle, digital illustration.
    Painted-wing tachinid fly (Ectophasia sp.) on a wild plant. — Stock Photo
    Painted-wing tachinid fly (Ectophasia sp.) on a wild plant.
    Dog silhouette with visible skeleton on white background, digital illustration. — Stock Photo
    Dog silhouette with visible skeleton on white background, digital illustration.
    Eggs of parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Eggs of parasitic worm Trichuris trichiura, computer illustration
    Leopard tortoise on white background. — Stock Photo
    Leopard tortoise on white background.
    Illustration of schistosoma blood fluke flatworm on black background. — Stock Photo
    Illustration of schistosoma blood fluke flatworm on black background.
    Adult female mosquito — Stock Photo
    Adult female mosquito
    Structure of dog lymphatic system with lymph vessels, digital illustration. — Stock Photo
    Structure of dog lymphatic system with lymph vessels, digital illustration.
    Differential interference contrast light micrograph of different species of fossil unicellular radiolarians (protozoa). — Stock Photo
    Differential interference contrast light micrograph of different species of fossil unicellular radiolarians (protozoa).
    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
    Colorful leaf roller weevil sitting on plant. — Stock Photo
    Colorful leaf roller weevil sitting on plant.
    Close-up of dragonfly perched on dried plant outdoors. — Stock Photo
    Close-up of dragonfly perched on dried plant outdoors.
    Light micrograph of liver fluke eggs in a fish scale. — Stock Photo
    Light micrograph of liver fluke eggs in a fish scale.
    Head louse on white background, digital illustration. — Stock Photo
    Head louse on white background, digital illustration.
    Head louse on human hair, digital illustration. — Stock Photo
    Head louse on human hair, digital illustration.
    Fly portrait with red compound eyes. — Stock Photo
    Fly portrait with red compound eyes.
    Close-up of bee fly on rose rhapsody flower. — Stock Photo
    Close-up of bee fly on rose rhapsody flower.
    Thornback ray (Raja clavata), X-ray. — Stock Photo
    Thornback ray (Raja clavata), X-ray.
    Digital illustration showing close-up of ciliate protozoan Balantidium coli intestinal parasite causing balantidiasis ulcer in human intestinal tract. — Stock Photo
    Digital illustration showing close-up of ciliate protozoan Balantidium coli intestinal parasite causing balantidiasis ulcer in human intestinal tract.
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Top view of dead mouse in Petri dish. — Stock Photo
    Top view of dead mouse in Petri dish.
    Colored scanning electron micrograph of variety of yeast species growing in larval tunnel of codling moth Cydia pomonella in mature apple. — Stock Photo
    Colored scanning electron micrograph of variety of yeast species growing in larval tunnel of codling moth Cydia pomonella in mature apple.