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    Brain-eating amoeba Naegleria fowleri protozoans in trophozoite form, digital illustration. — Stock Photo
    Brain-eating amoeba Naegleria fowleri protozoans in trophozoite form, digital illustration.
    Lung cancer, digital illustration and light micrograph showing lung adenocarcinoma. — Stock Photo
    Lung cancer, digital illustration and light micrograph showing lung adenocarcinoma.
    Magnified digital illustration of 2 cell stage embryo. — Stock Photo
    Magnified digital illustration of 2 cell stage embryo.
    Conceptual digital illustration of artificial fertilization with blastocyst in Petri dish. — Stock Photo
    Conceptual digital illustration of artificial fertilization with blastocyst in Petri dish.
    Illustration of irregular scarred cortical surface of kidney and close-up of Enterococcus bacteria. — Stock Photo
    Illustration of irregular scarred cortical surface of kidney and close-up of Enterococcus bacteria.
    Gram-negative Veillonella bacteria, digital illustration. — Stock Photo
    Gram-negative Veillonella bacteria, digital illustration.
    Pancreatic cancer cells — Stock Photo
    Pancreatic cancer cells
    Conceptual image of coxsackievirus cell — Stock Photo
    Conceptual image of coxsackievirus cell
    Illustration of yellow abscesses on kidney and close-up of Enterococcus bacteria. — Stock Photo
    Illustration of yellow abscesses on kidney and close-up of Enterococcus bacteria.
    3d illustration of a transparent and colourful protozoan. — Stock Photo
    3d illustration of a transparent and colourful protozoan.
    Giardia lamblia flagellated protozoan parasite, digital illustration. — Stock Photo
    Giardia lamblia flagellated protozoan parasite, digital illustration.
    Colored scanning electron micrograph of surface of human fallopian tube with epithelium of columnar cells with cilia. — Stock Photo
    Colored scanning electron micrograph of surface of human fallopian tube with epithelium of columnar cells with cilia.
    T lymphocyte cells attached to cancer cell — Stock Photo
    T lymphocyte cells attached to cancer cell
    Medical illustration of alveoli on black background — Stock Photo
    Medical illustration of alveoli on black background
    Group of flagella cholera bacteria, digital illustration. — Stock Photo
    Group of flagella cholera bacteria, digital illustration.
    Toilet microbes on contaminated seat surface in water closet, conceptual digital illustration. — Stock Photo
    Toilet microbes on contaminated seat surface in water closet, conceptual digital illustration.
    Winged Pearl Oyster (Pteria brunnea) with colonies of microscopic hydroids on its lip forming a beard. The Winged Pearl is growing attached to Hawaiian Black Coral (Antipathes griggi) on a submerged pinnacle off south Kona, the Big Island; Island of — Stock Photo
    Winged Pearl Oyster (Pteria brunnea) with colonies of microscopic hydroids on its lip forming a beard. The Winged Pearl is growing attached to Hawaiian Black Coral (Antipathes griggi) on a submerged pinnacle off south Kona, the Big Island; Island of
    African trypanosomiasis parasitic infection in the red blood cells — Stock Photo
    African trypanosomiasis parasitic infection in the red blood cells
    3d illustration of sperm cells moving towards human womb. — Stock Photo
    3d illustration of sperm cells moving towards human womb.
    Digital illustration of intestinal parasitic tapeworm head with suckers. — Stock Photo
    Digital illustration of intestinal parasitic tapeworm head with suckers.
    Illustration of pink stem cell on black background. — Stock Photo
    Illustration of pink stem cell on black background.
    Coloured scanning electron micrograph (SEM) of Schizosaccharomyces pombe yeast. — Stock Photo
    Coloured scanning electron micrograph (SEM) of Schizosaccharomyces pombe yeast.
    Magnified digital illustration of megakaryocyte cell. — Stock Photo
    Magnified digital illustration of megakaryocyte cell.
    Mucor fungus on black background, digital illustration. — Stock Photo
    Mucor fungus on black background, digital illustration.
    Trichomonas vaginalis parasitic microorganisms causing trichomoniasis, digital illustration. — Stock Photo
    Trichomonas vaginalis parasitic microorganisms causing trichomoniasis, digital illustration.
    Medical nanorobot on black background, digital illustration. — Stock Photo
    Medical nanorobot on black background, digital illustration.
    Close-up 3D illustration of X chromosome on white background. — Stock Photo
    Close-up 3D illustration of X chromosome on white background.
    Digital illustration of bacteria on tip of needle. — Stock Photo
    Digital illustration of bacteria on tip of needle.
    Illustration of group of cells in blood clot. — Stock Photo
    Illustration of group of cells in blood clot.
    Pathological anatomy of atherosclerosis — Stock Photo
    Pathological anatomy of atherosclerosis
    3d rendered illustration of human nerve cell on blue background. — Stock Photo
    3d rendered illustration of human nerve cell on blue background.
    Giardia lamblia single-celled protozoan parasite in human duodenum, digital artwork. — Stock Photo
    Giardia lamblia single-celled protozoan parasite in human duodenum, digital artwork.
    Simple columnar epithelium, light micrograph — Stock Photo
    Simple columnar epithelium, light micrograph
    Spore-forming Microsporidia parasite, computer illustration. — Stock Photo
    Spore-forming Microsporidia parasite, computer illustration.
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Conceptual image of plasmodium causing malaria — Stock Photo
    Conceptual image of plasmodium causing malaria
    Stylized colorful rabies virus particles — Stock Photo
    Stylized colorful rabies virus particles
    Magnified digital illustration of leukocyte cell. — Stock Photo
    Magnified digital illustration of leukocyte cell.
    Coloured scanning electron micrograph of activated platelets attached to surgical gauze. — Stock Photo
    Coloured scanning electron micrograph of activated platelets attached to surgical gauze.
    Coloured scanning electron micrograph of activated platelets attached to surgical gauze. — Stock Photo
    Coloured scanning electron micrograph of activated platelets attached to surgical gauze.
    Penicillinum fungus on black background, digital illustration. — Stock Photo
    Penicillinum fungus on black background, digital illustration.
    3d rendered illustration of purple nerve cell. — Stock Photo
    3d rendered illustration of purple nerve cell.
    Red blood cells, digital illustration. — Stock Photo
    Red blood cells, digital illustration.
    Possible global pandemic. Vaccine study for the Coronavirus virus. — Stock Photo
    Possible global pandemic. Vaccine study for the Coronavirus virus.
    Streptococcus pneumoniae bacteria, digital illustration. — Stock Photo
    Streptococcus pneumoniae bacteria, digital illustration.
    Zika virus particles transmitted by mosquito bite, digital illustration. — Stock Photo
    Zika virus particles transmitted by mosquito bite, digital illustration.
    Human cell, computer illustration. — Stock Photo
    Human cell, computer illustration.
    Digital illustration of human bone anatomy. — Stock Photo
    Digital illustration of human bone anatomy.
    Tendon, coloured scanning electron micrograph showing bundles of collagen fibres. — Stock Photo
    Tendon, coloured scanning electron micrograph showing bundles of collagen fibres.
    Giardia lamblia protozoan parasites, digital illustration — Stock Photo
    Giardia lamblia protozoan parasites, digital illustration
    Medical nanorobot on black background, digital illustration. — Stock Photo
    Medical nanorobot on black background, digital illustration.
    Toilet seat microbes, conceptual digital illustration. — Stock Photo
    Toilet seat microbes, conceptual digital illustration.
    3d illustration of pink colored Meningococcus meningitis bacteria pathogens. — Stock Photo
    3d illustration of pink colored Meningococcus meningitis bacteria pathogens.
    Hepatitis C virus green particles, illustration. — Stock Photo
    Hepatitis C virus green particles, illustration.
    Illustration of blue cell membrane on white background. — Stock Photo
    Illustration of blue cell membrane on white background.
    Colored scanning electron micrograph of cancellous bone tissue from starling bird skull. — Stock Photo
    Colored scanning electron micrograph of cancellous bone tissue from starling bird skull.
    Flush toilet microbe on contaminated surface, conceptual digital illustration on white background. — Stock Photo
    Flush toilet microbe on contaminated surface, conceptual digital illustration on white background.
    Conceptual image of plasmodium causing malaria — Stock Photo
    Conceptual image of plasmodium causing malaria
    3d illustration of red transparent sperm cells swimming towards egg cell. — Stock Photo
    3d illustration of red transparent sperm cells swimming towards egg cell.
    Spore-forming Microsporidia parasite, computer illustration. — Stock Photo
    Spore-forming Microsporidia parasite, computer illustration.