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    Kidney stone crystals, coloured scanning electron micrograph (SEM). — Stock Photo
    Kidney stone crystals, coloured scanning electron micrograph (SEM).
    Illustration of human egg cell dividing on blue background. — Stock Photo
    Illustration of human egg cell dividing on blue background.
    Digital illustration showing close-up of cholera infection bacteria in small intestine. — Stock Photo
    Digital illustration showing close-up of cholera infection bacteria in small intestine.
    Gram-negative Veillonella bacteria, digital illustration. — Stock Photo
    Gram-negative Veillonella bacteria, digital illustration.
    Human kidney tissue, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Human kidney tissue, light micrograph. Haematoxylin and eosin stain.
    Plague bacteria (Yersinia pestis), computer illustration. — Stock Photo
    Plague bacteria (Yersinia pestis), computer illustration.
    Mucor fungus on black background, digital illustration. — Stock Photo
    Mucor fungus on black background, digital illustration.
    Plague bacteria (Yersinia pestis), computer illustration. — Stock Photo
    Plague bacteria (Yersinia pestis), computer illustration.
    Illustration of yellow human egg cell on blue background. — Stock Photo
    Illustration of yellow human egg cell on blue background.
    Mucor fungus on black background, digital illustration. — Stock Photo
    Mucor fungus on black background, digital illustration.
    Possible global pandemic. Vaccine study for the Coronavirus virus. Petri dishes in the lab. — Stock Photo
    Possible global pandemic. Vaccine study for the Coronavirus virus. Petri dishes in the lab.
    3d rendered illustration of purple nerve cell. — Stock Photo
    3d rendered illustration of purple nerve cell.
    Alternaria fungi on white background, digital illustration. — Stock Photo
    Alternaria fungi on white background, digital illustration.
    Penicillinum fungus on black background, digital illustration. — Stock Photo
    Penicillinum fungus on black background, digital illustration.
    African trypanosomiasis parasitic infection in the red blood cells — Stock Photo
    African trypanosomiasis parasitic infection in the red blood cells
    Magnified digital illustration of monocyte cell. — Stock Photo
    Magnified digital illustration of monocyte cell.
    3d illustration of sperm cells moving towards human womb. — Stock Photo
    3d illustration of sperm cells moving towards human womb.
    Streptococcus pneumoniae bacteria (pneumococci), computer illustration — Stock Photo
    Streptococcus pneumoniae bacteria (pneumococci), computer illustration
    Coloured scanning electron micrograph of dividing Schizosaccharomyces pombe yeast cells. — Stock Photo
    Coloured scanning electron micrograph of dividing Schizosaccharomyces pombe yeast cells.
    Transparent cells on grey background, digital illustration. — Stock Photo
    Transparent cells on grey background, digital illustration.
    COVID-19, Coronavirus, group of viruses in worldwide pandemic concept — Stock Photo
    COVID-19, Coronavirus, group of viruses in worldwide pandemic concept
    3d illustration of pink colored Meningococcus meningitis bacteria pathogens. — Stock Photo
    3d illustration of pink colored Meningococcus meningitis bacteria pathogens.
    Helicobacter pylori bacteria — Stock Photo
    Helicobacter pylori bacteria
    Listeria monocytogenes bacteria, computer illustration. L. monocytogenes is the causative agent of the human disease listeriosis — Stock Photo
    Listeria monocytogenes bacteria, computer illustration. L. monocytogenes is the causative agent of the human disease listeriosis
    Group of orange virus particles, digital illustration. — Stock Photo
    Group of orange virus particles, digital illustration.
    3d illustration of sperm cells moving towards human womb. — Stock Photo
    3d illustration of sperm cells moving towards human womb.
    Illustration of human multi-cellular embryo. — Stock Photo
    Illustration of human multi-cellular embryo.
    Colored illustration of amyloid plaques on nerve cell. — Stock Photo
    Colored illustration of amyloid plaques on nerve cell.
    Pathogenic Listeria bacteria — Stock Photo
    Pathogenic Listeria bacteria
    Spore-forming Microsporidia parasite, computer illustration. — Stock Photo
    Spore-forming Microsporidia parasite, computer illustration.
    Mouldy smoked sausage and illustration of microscopic fungus Penicillium causing food spoilage and producing antibiotic penicillin. — Stock Photo
    Mouldy smoked sausage and illustration of microscopic fungus Penicillium causing food spoilage and producing antibiotic penicillin.
    Microscopic dust mites colony — Stock Photo
    Microscopic dust mites colony
    Brain-eating amoeba Naegleria fowleri protozoans in trophozoite form, digital illustration. — Stock Photo
    Brain-eating amoeba Naegleria fowleri protozoans in trophozoite form, digital illustration.
    Bartonella quintana bacteria, digital illustration. — Stock Photo
    Bartonella quintana bacteria, digital illustration.
    Abstract red colored cancer cell on white background, digital illustration. — Stock Photo
    Abstract red colored cancer cell on white background, digital illustration.
    Coloured scanning electron micrograph of osteocyte bone cell surrounded by bone tissue. — Stock Photo
    Coloured scanning electron micrograph of osteocyte bone cell surrounded by bone tissue.
    Abstract purple colored cancer cell on black background, digital illustration. — Stock Photo
    Abstract purple colored cancer cell on black background, digital illustration.
    Illustration of blue cell membrane on white background. — Stock Photo
    Illustration of blue cell membrane on white background.
    Human digestive system with Shigellosis infection and close-up of Shigella bacteria. — Stock Photo
    Human digestive system with Shigellosis infection and close-up of Shigella bacteria.
    Magnified digital illustration of 2 cell stage embryo. — Stock Photo
    Magnified digital illustration of 2 cell stage embryo.
    Digital illustration of bacteria on tip of needle. — Stock Photo
    Digital illustration of bacteria on tip of needle.
    3d illustration of human sperm cells in reproductive process. — Stock Photo
    3d illustration of human sperm cells in reproductive process.
    Giardia lamblia flagellated protozoan parasite, digital illustration. — Stock Photo
    Giardia lamblia flagellated protozoan parasite, digital illustration.
    Coloured scanning electron micrograph of cultured cancer cell from human cervix showing numerous microvilli. — Stock Photo
    Coloured scanning electron micrograph of cultured cancer cell from human cervix showing numerous microvilli.
    3d illustration of human sperm cells in reproductive process. — Stock Photo
    3d illustration of human sperm cells in reproductive process.
    Magnified digital illustration of mammary gland cells. — Stock Photo
    Magnified digital illustration of mammary gland cells.
    Zygote development 24-36 hours after fertilization — Stock Photo
    Zygote development 24-36 hours after fertilization
    Yellow rod-shaped Citrobacter bacteria, digital illustration. — Stock Photo
    Yellow rod-shaped Citrobacter bacteria, digital illustration.
    Medical illustration of alveoli on black background — Stock Photo
    Medical illustration of alveoli on black background
    Abstract artwork of human nerve cell structure. — Stock Photo
    Abstract artwork of human nerve cell structure.
    Magnified digital illustration of megakaryocyte cell. — Stock Photo
    Magnified digital illustration of megakaryocyte cell.
    Digital illustration of intestinal parasitic tapeworm with suckers. — Stock Photo
    Digital illustration of intestinal parasitic tapeworm with suckers.
    Tapeworm parasites in intestines — Stock Photo
    Tapeworm parasites in intestines
    Stachybotrys fungus on black background, digital illustration. — Stock Photo
    Stachybotrys fungus on black background, digital illustration.
    Red cancer cells, digital illustration. — Stock Photo
    Red cancer cells, digital illustration.
    Group of flagella cholera bacteria, digital illustration. — Stock Photo
    Group of flagella cholera bacteria, digital illustration.
    Illustration of pink stem cells on white background. — Stock Photo
    Illustration of pink stem cells on white background.
    Conceptual image of polyomavirus cell — Stock Photo
    Conceptual image of polyomavirus cell
    Brain-eating amoeba Naegleria fowleri protozoans in trophozoite form, digital illustration. — Stock Photo
    Brain-eating amoeba Naegleria fowleri protozoans in trophozoite form, digital illustration.
    Hair follicles. Coloured scanning electron micrograph (SEM). The outer layer of hair (the cuticle) has overlapping scales of keratin. These scales are thought to prevent hairs from matting together — Stock Photo
    Hair follicles. Coloured scanning electron micrograph (SEM). The outer layer of hair (the cuticle) has overlapping scales of keratin. These scales are thought to prevent hairs from matting together