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    Snake red blood cells. Coloured scanning electron micrograph (SEM) of whole and fractured red blood cells (erythrocytes, red) in a small blood vessel of a snake — Stock Photo
    Snake red blood cells. Coloured scanning electron micrograph (SEM) of whole and fractured red blood cells (erythrocytes, red) in a small blood vessel of a snake
    Horse skeleton in transparent silhouette on black background, computer illustration. — Stock Photo
    Horse skeleton in transparent silhouette on black background, computer illustration.
    Parasitic louse on human head skin, digital illustration. — Stock Photo
    Parasitic louse on human head skin, digital illustration.
    Obelia hydrozoan medusa. Light micrograph (LM) of a medusa (young polyp) from the Obelia geniculata hydroid. — Stock Photo
    Obelia hydrozoan medusa. Light micrograph (LM) of a medusa (young polyp) from the Obelia geniculata hydroid.
    Caenorhabditis elegans parasite worm, colored scanning electron micrograph. — Stock Photo
    Caenorhabditis elegans parasite worm, colored scanning electron micrograph.
    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.
    Arteries in transparent dog body, anatomical computer illustration. — Stock Photo
    Arteries in transparent dog body, anatomical computer illustration.
    Coloured scanning electron micrograph of Phasmarhabditis hermaphrodita microscopic nematode parasite of Rhabditidae. — Stock Photo
    Coloured scanning electron micrograph of Phasmarhabditis hermaphrodita microscopic nematode parasite of Rhabditidae.
    Buffalo mother and baby on field during great migration in Serengeti, Tanzania. — Stock Photo
    Buffalo mother and baby on field during great migration in Serengeti, Tanzania.
    Lionfish with traditional fins in water, detailed. — Stock Photo
    Lionfish with traditional fins in water, detailed.
    Human eyelash mites — Stock Photo
    Human eyelash mites
    Adult Bush cricket — Stock Photo
    Adult Bush cricket
    Dog silhouette with visible musculature on white background, digital illustration. — Stock Photo
    Dog silhouette with visible musculature on white background, digital illustration.
    Locusts in a jar — Stock Photo
    Locusts in a jar
    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
    Horse skeleton model with detailed Tibialis cranialis muscle, digital illustration. — Stock Photo
    Horse skeleton model with detailed Tibialis cranialis muscle, digital illustration.
    Veiled chameleon on tree branch — Stock Photo
    Veiled chameleon on tree branch
    Seagull birds in flight with outstretched wings over sea. — Stock Photo
    Seagull birds in flight with outstretched wings over sea.
    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
    Group of Trichomonas hominis protozoan parasites, digital illustration. — Stock Photo
    Group of Trichomonas hominis protozoan parasites, digital illustration.
    Digital illustration of nit egg of human head louse attached to human hair. — Stock Photo
    Digital illustration of nit egg of human head louse attached to human hair.
    Lynx spider sitting at edge of green leaf. — Stock Photo
    Lynx spider sitting at edge of green leaf.
    Babesia parasites inside red blood cell, computer illustration — Stock Photo
    Babesia parasites inside red blood cell, computer illustration
    Ground beetle in black and purple, detailed portrait. — Stock Photo
    Ground beetle in black and purple, detailed portrait.
    Leopard tortoise on white background. — Stock Photo
    Leopard tortoise on white background.
    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 mites, computer illustration — Stock Photo
    Dust mites, computer 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.
    Close-up of Spanish fly perched on fresh wild plant. — Stock Photo
    Close-up of Spanish fly perched on fresh wild plant.
    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
    Damselflies on a dry flower — Stock Photo
    Damselflies on a dry flower
    Anatomy of dog pancreas in transparent body, computer illustration. — Stock Photo
    Anatomy of dog pancreas in transparent body, computer illustration.
    Structure of dog musculature, computer illustration. — Stock Photo
    Structure of dog musculature, computer illustration.
    Spotted eye hoverfly in frontal portrait shot. — Stock Photo
    Spotted eye hoverfly in frontal portrait shot.
    Orange knee sawfly sitting on plant stem. — Stock Photo
    Orange knee sawfly sitting on plant stem.
    Tapeworm of cattle and other grazing animals, light micrograph. — Stock Photo
    Tapeworm of cattle and other grazing animals, light micrograph.
    Close-up of metallic green bottle fly perched on dried wild plant. — Stock Photo
    Close-up of metallic green bottle fly perched on dried wild plant.
    Od shaped bacteria Tragelaphus — Stock Photo
    Od shaped bacteria Tragelaphus
    Dog anatomy with visible organs on black background, digital illustration. — Stock Photo
    Dog anatomy with visible organs on black background, digital illustration.
    Digital illustration of parasitic hookworm Ancylostoma duodenale in small intestine. — Stock Photo
    Digital illustration of parasitic hookworm Ancylostoma duodenale in small intestine.
    Dog silhouette with red colored stomach on black background, digital illustration. — Stock Photo
    Dog silhouette with red colored stomach on black background, digital illustration.
    Structure of dog skeleton, rear view computer illustration. — Stock Photo
    Structure of dog skeleton, rear view computer illustration.
    Fly with dew drops — Stock Photo
    Fly with dew drops
    African mantis in threatening pose — Stock Photo
    African mantis in threatening pose
    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.
    Eggs of parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Eggs of parasitic worm Trichuris trichiura, computer illustration
    Tick showing its mouthparts — Stock Photo
    Tick showing its mouthparts
    Didinium sp. ciliate protozoa, coloured scanning electron micrograph (SEM). These tiny single-celled organisms are found in freshwater and marine habitats. They are predatory organism, feeding on other ciliate protozoans, mainly Paramecium — Stock Photo
    Didinium sp. ciliate protozoa, coloured scanning electron micrograph (SEM). These tiny single-celled organisms are found in freshwater and marine habitats. They are predatory organism, feeding on other ciliate protozoans, mainly Paramecium
    Thistle bud weevil sitting on plant stem. — Stock Photo
    Thistle bud weevil sitting on plant stem.
    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.
    Honey bee on honeycomb — Stock Photo
    Honey bee on honeycomb
    Robberfly insect eyes and antennas, detailed portrait. — Stock Photo
    Robberfly insect eyes and antennas, detailed portrait.
    Digital illustration of nit egg of human head louse attached to human hair. — Stock Photo
    Digital illustration of nit egg of human head louse attached to human hair.
    Copepod, coloured scanning electron micrograph (SEM). — Stock Photo
    Copepod, coloured scanning electron micrograph (SEM).
    Spanish fly colourful elytron surface texture. — Stock Photo
    Spanish fly colourful elytron surface texture.
    Insects preserved in amber — Stock Photo
    Insects preserved in amber
    Dog silhouette with visible skeleton on white background, digital illustration. — Stock Photo
    Dog silhouette with visible skeleton on white background, digital illustration.
    Pregnant female Praying mantis — Stock Photo
    Pregnant female Praying mantis
    Veterinarian giving dog physical examination — Stock Photo
    Veterinarian giving dog physical examination