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    Acanthamoeba castellanii amoeba in cerebrospinal fluid, digital illustration. — Stock Photo
    Acanthamoeba castellanii amoeba in cerebrospinal fluid, digital illustration.
    Computer illustration of a varicella zoster virus particles, the cause of chickenpox and shingles. Varicella zoster virus is also known as human herpes virus type 3 (HHV-3) — Stock Photo
    Computer illustration of a varicella zoster virus particles, the cause of chickenpox and shingles. Varicella zoster virus is also known as human herpes virus type 3 (HHV-3)
    Human immunodeficiency virus structure — Stock Photo
    Human immunodeficiency virus structure
    Herpes simplex virus, computer illustration — Stock Photo
    Herpes simplex virus, computer illustration
    Coronavirus infection, conceptual illustration. — Stock Photo
    Coronavirus infection, conceptual illustration.
    Digital illustration of Salmonella Gram-negative rod-shaped bacteria with flagella. — Stock Photo
    Digital illustration of Salmonella Gram-negative rod-shaped bacteria with flagella.
    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.
    Causes of bacterial meningitis, computer illustration. Neisseria meningitidis, Streptococcus pneumoniae, Haemophilus influenzae and Listeria monocytogenes bacteria, the main causative agents of bacterial meningitis. — Stock Photo
    Causes of bacterial meningitis, computer illustration. Neisseria meningitidis, Streptococcus pneumoniae, Haemophilus influenzae and Listeria monocytogenes bacteria, the main causative agents of bacterial meningitis.
    Bifidobacterium bacteria, computer illustration. Bifidobacteria are Gram-positive anaerobic bacteria that live in gastrointestinal tract, vagina and mouth — Stock Photo
    Bifidobacterium bacteria, computer illustration. Bifidobacteria are Gram-positive anaerobic bacteria that live in gastrointestinal tract, vagina and mouth
    Red colored probiotic rod-shaped gram-positive aerobic Bacillus clausii bacteria restoring microflora of intestine. — Stock Photo
    Red colored probiotic rod-shaped gram-positive aerobic Bacillus clausii bacteria restoring microflora of intestine.
    Vibrio vulnificus bacteria found in sea water, colored computer illustration. — Stock Photo
    Vibrio vulnificus bacteria found in sea water, colored computer illustration.
    Schizosaccharomyces pombe yeast — Stock Photo
    Schizosaccharomyces pombe yeast
    Digital illustration of Mycobacterium leprae gram-positive rod-shaped bacteria, causative agent of disease leprosy. — Stock Photo
    Digital illustration of Mycobacterium leprae gram-positive rod-shaped bacteria, causative agent of disease leprosy.
    Magnified digital illustration of Candida albicans yeast. — Stock Photo
    Magnified digital illustration of Candida albicans yeast.
    Enteroviruses and neuron — Stock Photo
    Enteroviruses and neuron
    Gram-negative plague bacteria Yersinia pestis with bipolar staining, digital illustration. — Stock Photo
    Gram-negative plague bacteria Yersinia pestis with bipolar staining, digital illustration.
    Ebola virus particles in blood, digital illustration. — Stock Photo
    Ebola virus particles in blood, digital illustration.
    Botulism bacterium. Illustration of botulism bacteria (Clostridium botulinum). These bacteria occur naturally in soil. They produce botulinum toxin, a powerful neurotoxin that can be ingested on contaminated, improperly cooked food — Stock Photo
    Botulism bacterium. Illustration of botulism bacteria (Clostridium botulinum). These bacteria occur naturally in soil. They produce botulinum toxin, a powerful neurotoxin that can be ingested on contaminated, improperly cooked food
    Protozoa Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration. — Stock Photo
    Protozoa Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration.
    Spherical and rod-shaped bacteria inside biofilm, digital illustration. — Stock Photo
    Spherical and rod-shaped bacteria inside biofilm, digital illustration.
    Flu viruses, computer illustration — Stock Photo
    Flu viruses, computer illustration
    Protozoa Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration. — Stock Photo
    Protozoa Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration.
    Penicillinum fungus on white background, digital illustration. — Stock Photo
    Penicillinum fungus on white background, digital illustration.
    Fungal fruiting bodies, digital illustration. — Stock Photo
    Fungal fruiting bodies, digital illustration.
    Clostridium phytofermentans bacteria — Stock Photo
    Clostridium phytofermentans bacteria
    Bacterial colonies on agar plate. — Stock Photo
    Bacterial colonies on agar plate.
    Plaque-forming bacteria — Stock Photo
    Plaque-forming bacteria
    Plasmodium malariae protozoan inside red blood cells in the ring-form trophozoite stage, computer illustration — Stock Photo
    Plasmodium malariae protozoan inside red blood cells in the ring-form trophozoite stage, computer illustration
    Toilet seat microbes, conceptual digital illustration. — Stock Photo
    Toilet seat microbes, conceptual digital illustration.
    Fungal fruiting bodies, digital illustration. — Stock Photo
    Fungal fruiting bodies, digital illustration.
    Computer illustration of co-infection with two major respiratory pathogenic bacteria, Mycobacterium tuberculosis (rod-shaped) and Streptococcus pneumonia (spherical) — Stock Photo
    Computer illustration of co-infection with two major respiratory pathogenic bacteria, Mycobacterium tuberculosis (rod-shaped) and Streptococcus pneumonia (spherical)
    Enteroviruses, computer illustration. Enterovirus is genus of positive-sense RNA viruses of family Picornaviridae — Stock Photo
    Enteroviruses, computer illustration. Enterovirus is genus of positive-sense RNA viruses of family Picornaviridae
    Global spread of coronaviruses, conceptual computer illustration — Stock Photo
    Global spread of coronaviruses, conceptual computer illustration
    Digital illustration of Helicobacter pylori bacteria in human stomach. — Stock Photo
    Digital illustration of Helicobacter pylori bacteria in human stomach.
    3d illustration of flu pathogen in cross-section. — Stock Photo
    3d illustration of flu pathogen in cross-section.
    Retrovirus virion structure and shape — Stock Photo
    Retrovirus virion structure and shape
    T lymphocyte (orange) attached to a cancer cell (blue), illustration. T lymphocytes are a type of white blood cell which matures in the thymus — Stock Photo
    T lymphocyte (orange) attached to a cancer cell (blue), illustration. T lymphocytes are a type of white blood cell which matures in the thymus
    Digitally generated illustration of influenza virus approaching receptor on plasma membrane of cell. — Stock Photo
    Digitally generated illustration of influenza virus approaching receptor on plasma membrane of cell.
    Dental plaque scanning electron micrograph — Stock Photo
    Dental plaque scanning electron micrograph
    Viral particle infection blood stream — Stock Photo
    Viral particle infection blood stream
    Biotechnology scientist taking note while biochemical research. — Stock Photo
    Biotechnology scientist taking note while biochemical research.
    Midsection of female microbiologist sterilizing inoculation loop. — Stock Photo
    Midsection of female microbiologist sterilizing inoculation loop.
    Microbiota of human intestine, abstract digital 3d illustration. — Stock Photo
    Microbiota of human intestine, abstract digital 3d illustration.
    Digital artwork of round blue cells on black background. — Stock Photo
    Digital artwork of round blue cells on black background.
    St. Louis encephalitis virus particles, computer illustration — Stock Photo
    St. Louis encephalitis virus particles, computer illustration
    Illustration of Legionella pneumophila bacteria, the cause of Legionnaires' disease — Stock Photo
    Illustration of Legionella pneumophila bacteria, the cause of Legionnaires' disease
    Brain infections. Computer illustration of microorganisms that cause encephalitis and meningitis — Stock Photo
    Brain infections. Computer illustration of microorganisms that cause encephalitis and meningitis
    Robotic hand holding vial containing coronavirus — Stock Photo
    Robotic hand holding vial containing coronavirus
    Bacteria multiplying on surface, digital illustration. — Stock Photo
    Bacteria multiplying on surface, digital illustration.
    Plasmodium vivax protozoan, computer illustration. — Stock Photo
    Plasmodium vivax protozoan, computer illustration.
    Freshwater diatom Licmorpha sp. — Stock Photo
    Freshwater diatom Licmorpha sp.
    Digital illustration of rod-shaped bacteria colony. — Stock Photo
    Digital illustration of rod-shaped bacteria colony.
    Toilet seat microbes, conceptual digital illustration. — Stock Photo
    Toilet seat microbes, conceptual digital illustration.
    Digital illustration of Mycobacterium leprae gram-positive rod-shaped bacteria, causative agent of disease leprosy. — Stock Photo
    Digital illustration of Mycobacterium leprae gram-positive rod-shaped bacteria, causative agent of disease leprosy.
    Coronavirus particles, computer illustration. Different strains of coronavirus are responsible for diseases such as the common cold, gastroenteritis and SARS (severe acute respiratory syndrome) — Stock Photo
    Coronavirus particles, computer illustration. Different strains of coronavirus are responsible for diseases such as the common cold, gastroenteritis and SARS (severe acute respiratory syndrome)
    Plasmodium malariae protozoa in blood vessel, computer illustration. — Stock Photo
    Plasmodium malariae protozoa in blood vessel, computer illustration.
    Digital illustration of Neisseria gonorrhoeae bacteria inside neutrophil white blood cells. — Stock Photo
    Digital illustration of Neisseria gonorrhoeae bacteria inside neutrophil white blood cells.
    Alternaria fungi on black background, digital illustration. — Stock Photo
    Alternaria fungi on black background, digital illustration.
    Colored digital illustration of Blastomyces dermatitidis fungus causing fungal infection. — Stock Photo
    Colored digital illustration of Blastomyces dermatitidis fungus causing fungal infection.
    Blood clot, computer illustration — Stock Photo
    Blood clot, computer illustration