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    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.
    Sperm cell with multiple tails — Stock Photo
    Sperm cell with multiple tails
    Triceratium sp. diatom algae — Stock Photo
    Triceratium sp. diatom algae
    Bacteriastrum sp. diatom algae — Stock Photo
    Bacteriastrum sp. diatom algae
    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.
    Campylobacter bacteria colony — Stock Photo
    Campylobacter bacteria colony
    Soap bubbles and acrylic paint in oil — Stock Photo
    Soap bubbles and acrylic paint in oil
    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.
    Digital illustration of trophozoite form of Acanthamoeba castellanii amoeba. — Stock Photo
    Digital illustration of trophozoite form of Acanthamoeba castellanii amoeba.
    Skimmia sp. pollen grain — Stock Photo
    Skimmia sp. pollen grain
    3d illustration of a transparent and colourful protozoan. — Stock Photo
    3d illustration of a transparent and colourful protozoan.
    Campylobacter jejuni bacteria — Stock Photo
    Campylobacter jejuni bacteria
    Helicobacter pyloris bacteria — Stock Photo
    Helicobacter pyloris bacteria
    Colorectal cancer cell dividing — Stock Photo
    Colorectal cancer cell dividing
    Phlox pollen grain — Stock Photo
    Phlox pollen grain
    Eupodiscus sculptus diatom — Stock Photo
    Eupodiscus sculptus diatom
    Father holding baby and checking cell phone — Stock Photo
    Father holding baby and checking cell phone
    Animal cell structure — Stock Photo
    Animal cell structure
    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.
    Balamuthia mandrillaris amoeba, computer illustration — Stock Photo
    Balamuthia mandrillaris amoeba, computer illustration
    Schizosaccharomyces pombe yeast — Stock Photo
    Schizosaccharomyces pombe yeast
    Human sperm cell, coloured scanning electron micrograph (SEM). — Stock Photo
    Human sperm cell, coloured scanning electron micrograph (SEM).
    Diatom eukaryotic algae — Stock Photo
    Diatom eukaryotic algae
    Cell culture plate on white background. — Stock Photo
    Cell culture plate on white background.
    Balamuthia mandrillaris amoeba organism, digital illustration. — Stock Photo
    Balamuthia mandrillaris amoeba organism, digital illustration.
    Single abstract bacterium on black background, computer illustration. — Stock Photo
    Single abstract bacterium on black background, computer illustration.
    Colored scanning electron micrograph of white blood cells and single platelet. — Stock Photo
    Colored scanning electron micrograph of white blood cells and single platelet.
    Campylobacter bacteria colony — Stock Photo
    Campylobacter bacteria colony
    Diatoms single-celled algae — Stock Photo
    Diatoms single-celled algae
    Male sex cell — Stock Photo
    Male sex cell
    Phytoplankton diatom Coscinodiscus sp — Stock Photo
    Phytoplankton diatom Coscinodiscus sp
    Campylodiscus fastuosus diatom — Stock Photo
    Campylodiscus fastuosus diatom
    Woman talking on cell phone at roadside behind warning triangle — Stock Photo
    Woman talking on cell phone at roadside behind warning triangle
    Primula pollen grain — Stock Photo
    Primula pollen grain
    Man talking on cell phone at roadside behind warning triangle — Stock Photo
    Man talking on cell phone at roadside behind warning triangle
    Geranium sp. pollen grain — Stock Photo
    Geranium sp. pollen grain
    Helicobacter pylori bacteria — Stock Photo
    Helicobacter pylori bacteria
    Digital illustration of trophozoite form of Acanthamoeba castellanii amoeba. — Stock Photo
    Digital illustration of trophozoite form of Acanthamoeba castellanii amoeba.
    Bacteriastrum sp. diatom algae — Stock Photo
    Bacteriastrum sp. diatom algae
    3d illustration of transparent and colourful protozoa. — Stock Photo
    3d illustration of transparent and colourful protozoa.
    Enterococcus bacteria colony — Stock Photo
    Enterococcus bacteria colony
    Diatom eukaryotic algae — Stock Photo
    Diatom eukaryotic algae
    Paramecium sp. ciliate protozoa — Stock Photo
    Paramecium sp. ciliate protozoa
    Cancerous tumour visualisation — Stock Photo
    Cancerous tumour visualisation
    Microscopic view of pancreatic cancer cell — Stock Photo
    Microscopic view of pancreatic cancer cell
    Conceptual image of a neuron on black background — Stock Photo
    Conceptual image of a neuron on black background
    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.
    3d illustration of red colored protozoan microorganism. — Stock Photo
    3d illustration of red colored protozoan microorganism.
    Phase contrast light micrograph of Paramecium a ciliate protozoan. — Stock Photo
    Phase contrast light micrograph of Paramecium a ciliate protozoan.
    Cancer cell characteristic — Stock Photo
    Cancer cell characteristic
    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.
    Single abstract bacterium on black background, computer illustration. — Stock Photo
    Single abstract bacterium on black background, computer illustration.
    Balamuthia mandrillaris amoeba organism, digital illustration. — Stock Photo
    Balamuthia mandrillaris amoeba organism, digital illustration.
    Campylobacter bacteria colony — Stock Photo
    Campylobacter bacteria colony
    Computer Illustration of a fat cell structure — Stock Photo
    Computer Illustration of a fat cell structure
    Chlamydia bacteria, illustration — Stock Photo
    Chlamydia bacteria, illustration
    Helicobacter pyloris bacteria — Stock Photo
    Helicobacter pyloris bacteria
    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
    Father checking smartphone while comforting sick daughter — Stock Photo
    Father checking smartphone while comforting sick daughter