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    Digital illustration of ciliate protozoan Balantidium coli intestinal parasites causing ulcer in intestinal tract. — Stock Photo
    Digital illustration of ciliate protozoan Balantidium coli intestinal parasites causing ulcer in intestinal tract.
    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
    Close-up of hatched campopleginae pupa attached on dried wild plant. — Stock Photo
    Close-up of hatched campopleginae pupa attached on dried wild plant.
    Butterfly compound eyes — Stock Photo
    Butterfly compound eyes
    Female crab spider guarding nest on plant. — Stock Photo
    Female crab spider guarding nest on plant.
    Eggs of parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Eggs of parasitic worm Trichuris trichiura, computer illustration
    Leech, coloured scanning electron micrograph (SEM). — Stock Photo
    Leech, coloured scanning electron micrograph (SEM).
    Horse skeleton, realistic 3d rendering. — Stock Photo
    Horse skeleton, realistic 3d rendering.
    Arteries in transparent dog body, anatomical computer illustration. — Stock Photo
    Arteries in transparent dog body, anatomical computer illustration.
    Digital illustration of ciliate protozoan Balantidium coli intestinal parasites causing ulcer in intestinal tract. — Stock Photo
    Digital illustration of ciliate protozoan Balantidium coli intestinal parasites causing ulcer in intestinal tract.
    Coloured scanning electron micrograph (SEM) of rods (yellow) and cones (green) in the retina of the eye. — Stock Photo
    Coloured scanning electron micrograph (SEM) of rods (yellow) and cones (green) in the retina of the eye.
    Male human flea — Stock Photo
    Male human flea
    Dog silhouette with visible musculature on white background, digital illustration. — Stock Photo
    Dog silhouette with visible musculature on white background, digital illustration.
    Surface of the foot of a common pollen beetle — Stock Photo
    Surface of the foot of a common pollen beetle
    Tmarus crab spider at edge of green leaf. — Stock Photo
    Tmarus crab spider at edge of green leaf.
    Polar bears fighting — Stock Photo
    Polar bears fighting
    Horse anatomy with visible internal organs on white background, computer illustration. — Stock Photo
    Horse anatomy with visible internal organs on white background, computer illustration.
    Water flea (Polyphemus pediculus), coloured scanning electron micrograph (SEM). — Stock Photo
    Water flea (Polyphemus pediculus), coloured scanning electron micrograph (SEM).
    Starfish skeleton on black background. — Stock Photo
    Starfish skeleton on black background.
    Full dog anatomy with internal organs and skeleton, digital illustration. — Stock Photo
    Full dog anatomy with internal organs and skeleton, digital illustration.
    Microscopic Dust mites on floor — Stock Photo
    Microscopic Dust mites on floor
    Anatomy of dog gallbladder in transparent body, computer illustration. — Stock Photo
    Anatomy of dog gallbladder in transparent body, 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.
    Babesia parasites inside red blood cell, computer illustration — Stock Photo
    Babesia parasites inside red blood cell, computer illustration
    Horse anatomy with visible internal organs on white background, computer illustration. — Stock Photo
    Horse anatomy with visible internal organs on white background, computer illustration.
    Madagascar hissing cockroach — Stock Photo
    Madagascar hissing cockroach
    Digital illustration of ciliate protozoan Balantidium coli intestinal parasite causing ulcer in intestinal tract. — Stock Photo
    Digital illustration of ciliate protozoan Balantidium coli intestinal parasite causing ulcer in intestinal tract.
    Close-up of mining bee portrait, scientific macrophotography. — Stock Photo
    Close-up of mining bee portrait, scientific macrophotography.
    Eggs of parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Eggs of parasitic worm Trichuris trichiura, computer illustration
    Seals sunbathing on rock — Stock Photo
    Seals sunbathing on rock
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Five butterflies on a plant stem — Stock Photo
    Five butterflies on a plant stem
    Adult Honeybee mite — Stock Photo
    Adult Honeybee mite
    Close-up of black Lypusa maurella moth on dried stem. — Stock Photo
    Close-up of black Lypusa maurella moth on dried stem.
    Dog silhouette with red colored spine on black background, digital illustration. — Stock Photo
    Dog silhouette with red colored spine on black background, digital illustration.
    Garden snail crawling on white background. — Stock Photo
    Garden snail crawling on white background.
    Horse skeleton model with detailed Tensor fascia lata muscle, digital illustration. — Stock Photo
    Horse skeleton model with detailed Tensor fascia lata muscle, 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
    Anatomy of dog heart in transparent body, computer illustration. — Stock Photo
    Anatomy of dog heart in transparent body, computer illustration.
    Parasitic louse on human head skin, digital illustration. — Stock Photo
    Parasitic louse on human head skin, digital illustration.
    Adult worker Honey bee — Stock Photo
    Adult worker Honey bee
    Close-up of cylindromia fly perched on wildflower. — Stock Photo
    Close-up of cylindromia fly perched on wildflower.
    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
    Praying mantis insect, detailed portrait. — Stock Photo
    Praying mantis insect, detailed portrait.
    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
    Close-up of Geometrid moth caterpillar mimicking branch on wild plant stem. — Stock Photo
    Close-up of Geometrid moth caterpillar mimicking branch on wild plant stem.
    Dog silhouette with red colored pancreas on black background, digital illustration. — Stock Photo
    Dog silhouette with red colored pancreas on black background, digital illustration.
    Parasitic nematode worm — Stock Photo
    Parasitic nematode worm
    Dolphin's dorsal fin appearing above water — Stock Photo
    Dolphin's dorsal fin appearing above water
    Locusts in a jar — Stock Photo
    Locusts in a jar
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Dog silhouette with red colored spine on black background, digital illustration. — Stock Photo
    Dog silhouette with red colored spine on black background, digital illustration.
    Eggs of parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Eggs of parasitic worm Trichuris trichiura, computer illustration
    Close-up of brown jewel beetle sitting on branch. — Stock Photo
    Close-up of brown jewel beetle sitting on branch.
    Colorful leaf roller weevil sitting on plant. — Stock Photo
    Colorful leaf roller weevil sitting on plant.
    Close-up of small copper butterfly covered by dew drops on wild plant. — Stock Photo
    Close-up of small copper butterfly covered by dew drops on wild plant.
    Rosemary beetle (Chrysolina americana) with open hard outer wings (elytra). — Stock Photo
    Rosemary beetle (Chrysolina americana) with open hard outer wings (elytra).
    Close-up of mining bee portrait from lateral view. — Stock Photo
    Close-up of mining bee portrait from lateral view.
    Female copepod with eggs — Stock Photo
    Female copepod with eggs
    Dust mites, computer illustration — Stock Photo
    Dust mites, computer illustration