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    Stagnant water bacteria — Stock Photo
    Stagnant water bacteria
    Amoeba shell. Coloured scanning electron micrograph (SEM) of a shell from a Euglypha sp. amoeba. — Stock Photo
    Amoeba shell. Coloured scanning electron micrograph (SEM) of a shell from a Euglypha sp. amoeba.
    Artwork of Rod-shaped bacteria — Stock Photo
    Artwork of Rod-shaped bacteria
    Artwork of Rod-shaped bacteria — Stock Photo
    Artwork of Rod-shaped bacteria
    Pathogenic Listeria bacteria — Stock Photo
    Pathogenic Listeria bacteria
    Stagnant water bacteria — Stock Photo
    Stagnant water bacteria
    3d rendering of a virus — Stock Photo
    3d rendering of a virus
    Fossilised fragment of a coccolithotrope skeleton — Stock Photo
    Fossilised fragment of a coccolithotrope skeleton
    Influenza myxovirus particle containing RNA, 3d digital illustration. — Stock Photo
    Influenza myxovirus particle containing RNA, 3d digital illustration.
    Canine parvovirus, illustration. Canine Parvoviruses include the smallest known viruses and some of the most environmentally resistant. — Stock Photo
    Canine parvovirus, illustration. Canine Parvoviruses include the smallest known viruses and some of the most environmentally resistant.
    Digital illustration of inner structure and RNA of human respiratory syncytial virus. — Stock Photo
    Digital illustration of inner structure and RNA of human respiratory syncytial virus.
    Covid-19 coronavirus particle, illustration. — Stock Photo
    Covid-19 coronavirus particle, illustration.
    Nodamura virus (NoV), illustration. This virus can cause lethal infections in mammals, fish and insects. It is named after the village of Nodamura in Japan where it was first discovered — Stock Photo
    Nodamura virus (NoV), illustration. This virus can cause lethal infections in mammals, fish and insects. It is named after the village of Nodamura in Japan where it was first discovered
    Abstract model of seasonal influenza B virus, conceptual digital illustration. — Stock Photo
    Abstract model of seasonal influenza B virus, conceptual digital illustration.
    Pox virus, computer illustration — Stock Photo
    Pox virus, computer illustration
    Digital illustration of trophozoite form of Acanthamoeba castellanii amoeba. — Stock Photo
    Digital illustration of trophozoite form of Acanthamoeba castellanii amoeba.
    Covid-19 coronavirus particles, computer illustration. The new coronavirus SARS-CoV-2 (previously 2019-CoV) emerged in Wuhan, China, in December 2019 — Stock Photo
    Covid-19 coronavirus particles, computer illustration. The new coronavirus SARS-CoV-2 (previously 2019-CoV) emerged in Wuhan, China, in December 2019
    Strands of Actinomyces viscosus — Stock Photo
    Strands of Actinomyces viscosus
    Rod-shaped bacteria infecting organism — Stock Photo
    Rod-shaped bacteria infecting organism
    Acanthamoeba castellanii amoeba in cerebrospinal fluid, digital illustration. — Stock Photo
    Acanthamoeba castellanii amoeba in cerebrospinal fluid, digital illustration.
    Salmonella sp. bacteria on tissue surface — Stock Photo
    Salmonella sp. bacteria on tissue surface
    Influenza myxovirus particle containing RNA, 3d digital illustration. — Stock Photo
    Influenza myxovirus particle containing RNA, 3d digital illustration.
    Lungs pneumonia caused by Mycoplasma pneumoniae bacteria, conceptual illustration. — Stock Photo
    Lungs pneumonia caused by Mycoplasma pneumoniae bacteria, conceptual illustration.
    Balamuthia mandrillaris amoeba, computer illustration — Stock Photo
    Balamuthia mandrillaris amoeba, computer illustration
    Possible global pandemic. Vaccine study for the Coronavirus virus. — Stock Photo
    Possible global pandemic. Vaccine study for the Coronavirus virus.
    Herpes simplex virus, computer illustration — Stock Photo
    Herpes simplex virus, computer illustration
    Escherichia coli pathogenic bacteria — Stock Photo
    Escherichia coli pathogenic bacteria
    Acinetobacter sp. bacteria infection — Stock Photo
    Acinetobacter sp. bacteria infection
    Chlamydia bacteria, illustration — Stock Photo
    Chlamydia bacteria, illustration
    Human parainfluenza virus, computer illustration — Stock Photo
    Human parainfluenza virus, computer illustration
    Possible global pandemic. Vaccine study for the Coronavirus virus. — Stock Photo
    Possible global pandemic. Vaccine study for the Coronavirus virus.
    Coronaviruses causing pneumonia, conceptual computer illustration — Stock Photo
    Coronaviruses causing pneumonia, conceptual computer illustration
    Coronaviruses causing pneumonia, conceptual computer illustration — Stock Photo
    Coronaviruses causing pneumonia, conceptual computer illustration
    Clostridium botulinum bacteria — Stock Photo
    Clostridium botulinum bacteria
    Canine parvovirus, illustration. Canine Parvoviruses include the smallest known viruses and some of the most environmentally resistant. — Stock Photo
    Canine parvovirus, illustration. Canine Parvoviruses include the smallest known viruses and some of the most environmentally resistant.
    Computer illustration of unicellular yeast fungus Candida auris. — Stock Photo
    Computer illustration of unicellular yeast fungus Candida auris.
    Herpes simplex virus, computer illustration — Stock Photo
    Herpes simplex virus, computer illustration
    Digital illustration of inner structure and RNA of human respiratory syncytial virus. — Stock Photo
    Digital illustration of inner structure and RNA of human respiratory syncytial virus.
    Micrograph of H3N2 influenza virus particles. — Stock Photo
    Micrograph of H3N2 influenza virus particles.
    Illustration of virus particles — Stock Photo
    Illustration of virus particles
    Acetic acid bacteria — Stock Photo
    Acetic acid bacteria
    Possible global pandemic. Vaccine study for the Coronavirus virus. — Stock Photo
    Possible global pandemic. Vaccine study for the Coronavirus virus.
    Coronavirus particle, illustration. Different strains of coronavirus are responsible for diseases such as the common cold, gastroenteritis and SARS (severe acute respiratory syndrome) — Stock Photo
    Coronavirus particle, illustration. Different strains of coronavirus are responsible for diseases such as the common cold, gastroenteritis and SARS (severe acute respiratory syndrome)
    Colored digital illustration of Blastomyces dermatitidis fungus causing fungal infection. — Stock Photo
    Colored digital illustration of Blastomyces dermatitidis fungus causing fungal infection.
    Destruction of human cytomegalovirus — Stock Photo
    Destruction of human cytomegalovirus
    Unicellular fungus Candida auris — Stock Photo
    Unicellular fungus Candida auris
    Canine parvovirus, illustration. Canine Parvoviruses include the smallest known viruses and some of the most environmentally resistant. — Stock Photo
    Canine parvovirus, illustration. Canine Parvoviruses include the smallest known viruses and some of the most environmentally resistant.
    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
    Covid-19 coronavirus particles, computer illustration. The new coronavirus SARS-CoV-2 (previously 2019-CoV) emerged in Wuhan, China, in December 2019 — Stock Photo
    Covid-19 coronavirus particles, computer illustration. The new coronavirus SARS-CoV-2 (previously 2019-CoV) emerged in Wuhan, China, in December 2019
    Blastomyces dermatitidis fungus, computer illustration. — Stock Photo
    Blastomyces dermatitidis fungus, computer illustration.
    Plants and flower on biofilm in the forest — Stock Photo
    Plants and flower on biofilm in the forest
    Scanning electron micrograph (SEM) of a copepod (subclass Copepoda). — Stock Photo
    Scanning electron micrograph (SEM) of a copepod (subclass Copepoda).
    Bacteria found in a sample of human faeces — Stock Photo
    Bacteria found in a sample of human faeces
    3d illustration of Coxiella burnetii bacteria. This bacterium affects humans and other animals such as cattle, sheep, goats, cats and dogs. It is the cause of Q fever, a highly infectious, influenza-like, febrile illness — Stock Photo
    3d illustration of Coxiella burnetii bacteria. This bacterium affects humans and other animals such as cattle, sheep, goats, cats and dogs. It is the cause of Q fever, a highly infectious, influenza-like, febrile illness
    Colored digital illustration of Blastomyces dermatitidis fungus causing fungal infection. — Stock Photo
    Colored digital illustration of Blastomyces dermatitidis fungus causing fungal infection.
    Rod-shaped bacterial organisms — Stock Photo
    Rod-shaped bacterial organisms
    Possible global pandemic. Vaccine study for the Coronavirus virus. — Stock Photo
    Possible global pandemic. Vaccine study for the Coronavirus virus.
    Plaque-forming bacteria — Stock Photo
    Plaque-forming bacteria
    Bacteria infecting organism — Stock Photo
    Bacteria infecting organism
    Helicobacter pylori bacterium — Stock Photo
    Helicobacter pylori bacterium