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    Campylodiscus fastuosus diatom — Stock Photo
    Campylodiscus fastuosus diatom
    Conceptual image of coxsackievirus cell — Stock Photo
    Conceptual image of coxsackievirus cell
    Male sex cell — Stock Photo
    Male sex cell
    Male sex cell — Stock Photo
    Male sex cell
    Cancerous tumour visualisation — Stock Photo
    Cancerous tumour visualisation
    Oligodendrocyte cell structure — Stock Photo
    Oligodendrocyte cell structure
    Illustration of single human blood cell on black background. — Stock Photo
    Illustration of single human blood cell on black background.
    Anthrax bacteria structure — Stock Photo
    Anthrax bacteria structure
    Campylobacter bacteria colony — Stock Photo
    Campylobacter bacteria colony
    Campylobacter jejuni bacteria — Stock Photo
    Campylobacter jejuni bacteria
    Campylobacter bacteria colony — Stock Photo
    Campylobacter bacteria colony
    Campylobacter jejuni bacteria — Stock Photo
    Campylobacter jejuni bacteria
    Single abstract bacterium on black background, computer illustration. — Stock Photo
    Single abstract bacterium on black background, computer illustration.
    Illustration of single human blood cell on black background. — Stock Photo
    Illustration of single human blood cell on black background.
    Cell culture plate on white background. — Stock Photo
    Cell culture plate on white background.
    Balamuthia mandrillaris amoeba, computer illustration — Stock Photo
    Balamuthia mandrillaris amoeba, computer illustration
    Conceptual image of a neuron on black background — Stock Photo
    Conceptual image of a neuron on black background
    Balamuthia mandrillaris amoeba organism, digital illustration. — Stock Photo
    Balamuthia mandrillaris amoeba organism, digital illustration.
    Schizosaccharomyces pombe yeast — Stock Photo
    Schizosaccharomyces pombe yeast
    Eupodiscus sculptus diatom — Stock Photo
    Eupodiscus sculptus diatom
    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).
    Visual rendering of Amoeba — Stock Photo
    Visual rendering of Amoeba
    Soap bubbles and acrylic paint in oil — Stock Photo
    Soap bubbles and acrylic paint in oil
    Digital illustration of trophozoite form of Acanthamoeba castellanii amoeba. — Stock Photo
    Digital illustration of trophozoite form of Acanthamoeba castellanii amoeba.
    Schizosaccharomyces pombe yeast — Stock Photo
    Schizosaccharomyces pombe yeast
    Visual rendering of Amoeba — Stock Photo
    Visual rendering of Amoeba
    Paramecium sp. ciliate protozoa — Stock Photo
    Paramecium sp. ciliate protozoa
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    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.
    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.
    Sperm cell with multiple tails — Stock Photo
    Sperm cell with multiple tails
    Phase contrast light micrograph of Paramecium a ciliate protozoan. — Stock Photo
    Phase contrast light micrograph of Paramecium a ciliate protozoan.
    Campylobacter jejuni bacteria — Stock Photo
    Campylobacter jejuni bacteria
    Colored scanning electron micrograph of lymphoma cell showing early apoptotic change. — Stock Photo
    Colored scanning electron micrograph of lymphoma cell showing early apoptotic change.
    Helicobacter pyloris bacteria — Stock Photo
    Helicobacter pyloris bacteria
    Geranium pollen grain — Stock Photo
    Geranium pollen grain
    Three dinoflagellates (blue), coloured scanning electron micrograph (SEM). Dinoflagellates are unicellular protozoans. — Stock Photo
    Three dinoflagellates (blue), coloured scanning electron micrograph (SEM). Dinoflagellates are unicellular protozoans.
    Rutilaria epsilon diatom — Stock Photo
    Rutilaria epsilon diatom
    Cells trapped in fibrin protein mesh — Stock Photo
    Cells trapped in fibrin protein mesh
    Helicobacter pylori bacteria — Stock Photo
    Helicobacter pylori bacteria
    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.
    Sperm cell with multiple tails — Stock Photo
    Sperm cell with multiple tails
    Enterococcus bacteria colony — Stock Photo
    Enterococcus bacteria colony
    Campylodiscus fastuosus diatom — Stock Photo
    Campylodiscus fastuosus diatom
    Enterococcus bacteria colony — Stock Photo
    Enterococcus bacteria colony
    Helicobacter pylori bacteria — Stock Photo
    Helicobacter pylori bacteria
    Paramecium ciliate protozoan — Stock Photo
    Paramecium ciliate protozoan
    Phlox pollen grain — Stock Photo
    Phlox pollen grain
    Male sex cell — Stock Photo
    Male sex cell
    Skimmia sp. pollen grain — Stock Photo
    Skimmia sp. pollen grain
    Campylobacter jejuni bacteria — Stock Photo
    Campylobacter jejuni bacteria
    Phytoplankton diatom Coscinodiscus sp — Stock Photo
    Phytoplankton diatom Coscinodiscus sp
    Woman talking on cell phone with automobile hood raised at roadside — Stock Photo
    Woman talking on cell phone with automobile hood raised at roadside
    Puffball fungus spore — Stock Photo
    Puffball fungus spore
    Diatom eukaryotic algae — Stock Photo
    Diatom eukaryotic algae
    Conceptual image of polyomavirus cell — Stock Photo
    Conceptual image of polyomavirus cell
    Digital illustration of trophozoite form of Acanthamoeba castellanii amoeba. — Stock Photo
    Digital illustration of trophozoite form of Acanthamoeba castellanii amoeba.
    Father holding baby and checking cell phone — Stock Photo
    Father holding baby and checking cell phone
    Paramecium ciliate protozoan — Stock Photo
    Paramecium ciliate protozoan
    Bacteriastrum sp. diatom algae — Stock Photo
    Bacteriastrum sp. diatom algae