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    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
    House dust mite — Stock Photo
    House dust mite
    Dog tapeworm head — Stock Photo
    Dog tapeworm head
    Coloured scanning electron micrograph (SEM) of the shell of the foraminiferan Orbulina sp. — Stock Photo
    Coloured scanning electron micrograph (SEM) of the shell of the foraminiferan Orbulina sp.
    Live Black-Lipped Pearl Oyster (Pinctada margaritifera) living on Haloha Reef off Maui; Maui, Hawaii, United States of America — Stock Photo
    Live Black-Lipped Pearl Oyster (Pinctada margaritifera) living on Haloha Reef off Maui; Maui, Hawaii, United States of America
    Weevil (Sitophilus sp.), coloured scanning electron micrograph (SEM). This weevil is a major agricultural pest. It primarily attacks stored grains and fruits, feeding on them with its often elongated snout, or rostrum — Stock Photo
    Weevil (Sitophilus sp.), coloured scanning electron micrograph (SEM). This weevil is a major agricultural pest. It primarily attacks stored grains and fruits, feeding on them with its often elongated snout, or rostrum
    Eggs of parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Eggs of parasitic worm Trichuris trichiura, 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.
    Digital illustration of parasitic Ancylostoma duodenale hookworms. — Stock Photo
    Digital illustration of parasitic Ancylostoma duodenale hookworms.
    Head louse on human hair — Stock Photo
    Head louse on human hair
    Echinococcosis multilocularis hydatid cyst, computer illustration — Stock Photo
    Echinococcosis multilocularis hydatid cyst, computer illustration
    Giardia lamblia single-celled protozoan parasites in human duodenum, digital artwork. — Stock Photo
    Giardia lamblia single-celled protozoan parasites in human duodenum, digital artwork.
    A pair of salps (Salpa sp.) with hyperiid amphipod (Hyperiidea) hitchhikers photographed under water during a blackwater dive off the Kona Coast, the Big Island; Island of Hawaii, Hawaii, United States of America — Stock Photo
    A pair of salps (Salpa sp.) with hyperiid amphipod (Hyperiidea) hitchhikers photographed under water during a blackwater dive off the Kona Coast, the Big Island; Island of Hawaii, Hawaii, United States of America
    External mineralised structures of coccolithophores — Stock Photo
    External mineralised structures of coccolithophores
    Echinococcosis multilocularis hydatid cyst, computer illustration — Stock Photo
    Echinococcosis multilocularis hydatid cyst, computer illustration
    Adult dust mite — Stock Photo
    Adult dust mite
    Eggs of parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Eggs of parasitic worm Trichuris trichiura, computer illustration
    Naegleria brain-eating amoeba forms, digital illustration — Stock Photo
    Naegleria brain-eating amoeba forms, digital illustration
    A Cluster Of Catepillars Congregate On A Tree; Bolivia — Stock Photo
    A Cluster Of Catepillars Congregate On A Tree; Bolivia
    House dust mite — Stock Photo
    House dust mite
    Stick insect foot — Stock Photo
    Stick insect foot
    This Green Linckia (Linckia guildingi) starfish or sea star is unusual in that it has four rather than the normal five arms. It is resting on a volcanic rock ledge located off the Kona coast, the Big Island, Hawaii, USA. Near to it is pink coloured c — Stock Photo
    This Green Linckia (Linckia guildingi) starfish or sea star is unusual in that it has four rather than the normal five arms. It is resting on a volcanic rock ledge located off the Kona coast, the Big Island, Hawaii, USA. Near to it is pink coloured c
    Hydatid disease in liver, cystic echinococcosis, Computer illustration — Stock Photo
    Hydatid disease in liver, cystic echinococcosis, Computer 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
    Echinococcus granulosus hydatid cyst, computer illustration — Stock Photo
    Echinococcus granulosus hydatid cyst, computer illustration
    Eggs of parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Eggs of parasitic worm Trichuris trichiura, computer 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
    Hydatid disease in liver, cystic echinococcosis, Computer illustration — Stock Photo
    Hydatid disease in liver, cystic echinococcosis, Computer illustration
    Echinococcosis multilocularis hydatid cyst, computer illustration — Stock Photo
    Echinococcosis multilocularis hydatid cyst, computer illustration
    Close-up of mating six spot burnet moths on common thistle flower. — Stock Photo
    Close-up of mating six spot burnet moths on common thistle flower.
    Hydatid disease in liver, cystic echinococcosis, Computer illustration — Stock Photo
    Hydatid disease in liver, cystic echinococcosis, Computer illustration
    Earthworm coloured scanning electron micrograph — Stock Photo
    Earthworm coloured scanning electron micrograph
    Common green darner dragonflies landing on lily pads. — Stock Photo
    Common green darner dragonflies landing on lily pads.
    Eggs of parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Eggs of parasitic worm Trichuris trichiura, computer illustration
    Echinococcosis multilocularis hydatid cyst, computer illustration — Stock Photo
    Echinococcosis multilocularis hydatid cyst, computer illustration
    Hydatid disease in liver, cystic echinococcosis, Computer illustration — Stock Photo
    Hydatid disease in liver, cystic echinococcosis, Computer illustration
    Echinococcus granulosus hydatid cyst, computer illustration — Stock Photo
    Echinococcus granulosus hydatid cyst, computer illustration
    Banded sea urchin (Echinothrix calamaris) on a reef off the Kona coast, the Big Island; Island of Hawaii, Hawaii, United States of America — Stock Photo
    Banded sea urchin (Echinothrix calamaris) on a reef off the Kona coast, the Big Island; Island of Hawaii, Hawaii, United States of America
    Scanning electron micrograph (SEM) of a copepod (subclass Copepoda). — Stock Photo
    Scanning electron micrograph (SEM) of a copepod (subclass Copepoda).
    Digital illustration of parasitic hookworms Ancylostoma duodenale on white background. — Stock Photo
    Digital illustration of parasitic hookworms Ancylostoma duodenale on white background.
    Hydatid disease in liver, cystic echinococcosis, Computer illustration — Stock Photo
    Hydatid disease in liver, cystic echinococcosis, Computer 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
    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
    Hydatid disease in liver, cystic echinococcosis, Computer illustration — Stock Photo
    Hydatid disease in liver, cystic echinococcosis, Computer 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
    Colored scanning electron micrograph of sectioned seminiferous tubule, site of sperm production in human testes. — Stock Photo
    Colored scanning electron micrograph of sectioned seminiferous tubule, site of sperm production in human testes.
    Microfilaria worms in blood — Stock Photo
    Microfilaria worms in blood
    Close-up underwater photograph showing the tentacles and various organs of the putative Siphonophre species Agalma okeni taken during a blackwater (bluewater at night) scuba dive off the Kona Coast, the Big Island, Hawaii, during the summer; Island o — Stock Photo
    Close-up underwater photograph showing the tentacles and various organs of the putative Siphonophre species Agalma okeni taken during a blackwater (bluewater at night) scuba dive off the Kona Coast, the Big Island, Hawaii, during the summer; Island o
    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
    Egg of a parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Egg of a parasitic worm Trichuris trichiura, computer illustration
    Hydatid disease in liver, cystic echinococcosis, Computer illustration — Stock Photo
    Hydatid disease in liver, cystic echinococcosis, Computer illustration
    Eggs of parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Eggs of parasitic worm Trichuris trichiura, computer illustration
    Egg of a parasitic worm Trichuris trichiura, computer illustration — Stock Photo
    Egg of a parasitic worm Trichuris trichiura, computer illustration
    Hydatid disease in liver, cystic echinococcosis, Computer illustration — Stock Photo
    Hydatid disease in liver, cystic echinococcosis, Computer illustration
    Amazing transparent Antarctic krill with red spots among haze of cold ocean water on black background — Stock Photo
    Amazing transparent Antarctic krill with red spots among haze of cold ocean water on black background
    Insects fossilised in amber — Stock Photo
    Insects fossilised in amber
    Digital illustration of multiple threadworms in human intestine. — Stock Photo
    Digital illustration of multiple threadworms in human intestine.
    A Black-Lipped Pearl Oyster (Pinctada margaritifera) which is now a protected species, living at Haloha Reef off Maui, Hawaii, USA. This is the animal that generates the precious pearls used in jewelry; Maui, Hawaii, United States of America — Stock Photo
    A Black-Lipped Pearl Oyster (Pinctada margaritifera) which is now a protected species, living at Haloha Reef off Maui, Hawaii, USA. This is the animal that generates the precious pearls used in jewelry; Maui, Hawaii, United States of America
    Hydatid disease in liver, cystic echinococcosis, Computer illustration — Stock Photo
    Hydatid disease in liver, cystic echinococcosis, Computer illustration
    A Red Slate Pencil Urchin (Heterocentrotus mamillatus) rests on Molokini Backwall which located offshore of Maui; Hawaii, United States of America — Stock Photo
    A Red Slate Pencil Urchin (Heterocentrotus mamillatus) rests on Molokini Backwall which located offshore of Maui; Hawaii, United States of America