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    Gram-negative Veillonella bacteria, digital illustration. — Stock Photo
    Gram-negative Veillonella bacteria, digital illustration.
    Digital illustration of Escherichia coli bacteria. — Stock Photo
    Digital illustration of Escherichia coli bacteria.
    Transfusion transmitted virus particles, digital illustration — Stock Photo
    Transfusion transmitted virus particles, digital illustration
    Various bacteria in human intestine, digital illustration. — Stock Photo
    Various bacteria in human intestine, digital illustration.
    Female scientist holding petri dish with biological cultures. — Stock Photo
    Female scientist holding petri dish with biological cultures.
    Digital illustration of Norovirus genus of RNA virus. — Stock Photo
    Digital illustration of Norovirus genus of RNA virus.
    Digital illustration of gram-positive rod-shaped mycobacterium tuberculosis bacteria. — Stock Photo
    Digital illustration of gram-positive rod-shaped mycobacterium tuberculosis bacteria.
    Person hand pipetting liquid into petri dish. — Stock Photo
    Person hand pipetting liquid into petri dish.
    Digital illustration of human digestive system and close-up of intestinal bacteria. — Stock Photo
    Digital illustration of human digestive system and close-up of intestinal bacteria.
    Gram-negative Veillonella bacteria, digital illustration. — Stock Photo
    Gram-negative Veillonella bacteria, digital illustration.
    Micrograph of H3N2 influenza virus particles. — Stock Photo
    Micrograph of H3N2 influenza virus particles.
    Digital illustration of Helicobacter pylori bacteria in human stomach. — Stock Photo
    Digital illustration of Helicobacter pylori bacteria in human stomach.
    Gram-positive Peptococcus bacteria, digital illustration. — Stock Photo
    Gram-positive Peptococcus bacteria, digital illustration.
    Digital illustration of gram-positive rod-shaped mycobacterium tuberculosis bacteria. — Stock Photo
    Digital illustration of gram-positive rod-shaped mycobacterium tuberculosis bacteria.
    Gram-positive Peptostreptococcus bacteria, digital illustration. — Stock Photo
    Gram-positive Peptostreptococcus bacteria, digital illustration.
    Digital illustration of human digestive system and close-up of Escherichia coli bacteria. — Stock Photo
    Digital illustration of human digestive system and close-up of Escherichia coli bacteria.
    Digital illustration of clostridium difficile bacteria. — Stock Photo
    Digital illustration of clostridium difficile bacteria.
    Digital illustration of clostridium difficile bacteria. — Stock Photo
    Digital illustration of clostridium difficile bacteria.
    Digital illustration of glycoprotein spikes hemagglutinin and neuraminidase on influenza virus. — Stock Photo
    Digital illustration of glycoprotein spikes hemagglutinin and neuraminidase on influenza virus.
    Digital illustration of glycoprotein spikes hemagglutinin and neuraminidase on influenza virus. — Stock Photo
    Digital illustration of glycoprotein spikes hemagglutinin and neuraminidase on influenza virus.
    Person hand pouring beads into petri dish. — Stock Photo
    Person hand pouring beads into petri dish.
    Digital illustration of clostridium difficile bacteria. — Stock Photo
    Digital illustration of clostridium difficile bacteria.
    Digital illustration of glycoprotein spikes hemagglutinin and neuraminidase on influenza virus. — Stock Photo
    Digital illustration of glycoprotein spikes hemagglutinin and neuraminidase on influenza virus.
    Scientist holding petri dish with biohazard warning in microbiology lab. — Stock Photo
    Scientist holding petri dish with biohazard warning in microbiology lab.
    Scientist holding petri dish with biohazard warning in microbiology lab. — Stock Photo
    Scientist holding petri dish with biohazard warning in microbiology lab.
    Micrograph of H3N2 influenza virus particles. — Stock Photo
    Micrograph of H3N2 influenza virus particles.
    Digital illustration of clostridium difficile bacteria. — Stock Photo
    Digital illustration of clostridium difficile bacteria.
    Close-up of person holding petri dish for biological research. — Stock Photo
    Close-up of person holding petri dish for biological research.
    Digital illustration of clostridium difficile bacteria. — Stock Photo
    Digital illustration of clostridium difficile bacteria.
    Close-up of person hand holding petri dish with liquid for biological research. — Stock Photo
    Close-up of person hand holding petri dish with liquid for biological research.
    Digital illustration of immunoglobulin in blood. — Stock Photo
    Digital illustration of immunoglobulin in blood.
    Micrograph of H3N2 influenza virus particles. — Stock Photo
    Micrograph of H3N2 influenza virus particles.
    Micrograph of H3N2 influenza virus particles. — Stock Photo
    Micrograph of H3N2 influenza virus particles.
    Micrograph of H3N2 influenza virus particles. — Stock Photo
    Micrograph of H3N2 influenza virus particles.
    Stacked Petri dishes with biohazard warning tape. — Stock Photo
    Stacked Petri dishes with biohazard warning tape.
    Narrowed blood vessel, computer illustration. — Stock Photo
    Narrowed blood vessel, computer illustration.
    Aggregatibacter aphrophilus bacteria, computer illustration. — Stock Photo
    Aggregatibacter aphrophilus bacteria, computer illustration.
    Coloured scanning electron micrograph (SEM) of a foraminiferan microfossil from maldives beach sand. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a foraminiferan microfossil from maldives beach sand.
    Illustration of a retrovirus virus particle. — Stock Photo
    Illustration of a retrovirus virus particle.
    Cryptococcus gattii fungus, computer illustration. — Stock Photo
    Cryptococcus gattii fungus, computer illustration.
    Illustration of HIV particles in blood. — Stock Photo
    Illustration of HIV particles in blood.
    Rat bite fever bacteria, computer illustration — Stock Photo
    Rat bite fever bacteria, computer illustration
    Blastomyces dermatitidis fungus, computer illustration. — Stock Photo
    Blastomyces dermatitidis fungus, computer illustration.
    Coloured scanning electron micrograph (SEM) of the shell (test) of a Globigerina sp. planktonic foraminiferan. — Stock Photo
    Coloured scanning electron micrograph (SEM) of the shell (test) of a Globigerina sp. planktonic foraminiferan.
    Coloured scanning electron micrograph (SEM) of a foraminiferan microfossil from maldives beach sand. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a foraminiferan microfossil from maldives beach sand.
    Freshwater sponge (Spongilla sp.), coloured scanning electron micrograph (SEM). — Stock Photo
    Freshwater sponge (Spongilla sp.), coloured scanning electron micrograph (SEM).
    Rat bite fever bacteria, computer illustration — Stock Photo
    Rat bite fever bacteria, computer illustration
    Mycobacterium chimaera bacteria, computer illustration. — Stock Photo
    Mycobacterium chimaera bacteria, computer illustration.
    Coloured scanning electron micrograph (SEM) of Schizosaccharomyces pombe yeast. — Stock Photo
    Coloured scanning electron micrograph (SEM) of Schizosaccharomyces pombe yeast.
    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.
    Freshwater sponge (Spongilla sp.), coloured scanning electron micrograph (SEM). — Stock Photo
    Freshwater sponge (Spongilla sp.), coloured scanning electron micrograph (SEM).
    Cryptococcus gattii fungus, computer illustration. — Stock Photo
    Cryptococcus gattii fungus, computer illustration.
    Coloured scanning electron micrograph (SEM) of a foraminiferan microfossil from maldives beach sand. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a foraminiferan microfossil from maldives beach sand.
    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.
    Rat bite fever bacteria, computer illustration — Stock Photo
    Rat bite fever bacteria, computer illustration
    Cryptococcus gattii fungus, computer illustration. — Stock Photo
    Cryptococcus gattii fungus, computer illustration.
    Adeno-associated viruses, computer illustration. — Stock Photo
    Adeno-associated viruses, computer illustration.
    Aggregatibacter aphrophilus bacteria, computer illustration. — Stock Photo
    Aggregatibacter aphrophilus bacteria, computer illustration.
    Differential interference contrast light micrograph of different species of fossil unicellular radiolarians (protozoa). — Stock Photo
    Differential interference contrast light micrograph of different species of fossil unicellular radiolarians (protozoa).
    Coloured scanning electron micrograph (SEM) of the shell (test) of a Globigerina sp. planktonic foraminiferan. — Stock Photo
    Coloured scanning electron micrograph (SEM) of the shell (test) of a Globigerina sp. planktonic foraminiferan.