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    Human sperm cell, coloured scanning electron micrograph (SEM). — Stock Photo
    Human sperm cell, coloured scanning electron micrograph (SEM).
    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.
    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.
    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.
    Coloured scanning electron micrograph (SEM) of a tumour cell, showing pseudopodia protrusions (bottom left and right), a prominent feature of actively motile cells. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a tumour cell, showing pseudopodia protrusions (bottom left and right), a prominent feature of actively motile cells.
    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).
    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.
    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.
    Microscopic view of pancreatic cancer cell — Stock Photo
    Microscopic view of pancreatic cancer cell
    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.
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    Conceptual image of a neuron on black background — Stock Photo
    Conceptual image of a neuron on black background
    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.
    Human sperm cell, coloured scanning electron micrograph (SEM). — Stock Photo
    Human sperm cell, coloured scanning electron micrograph (SEM).
    Paramecium sp. ciliate protozoa — Stock Photo
    Paramecium sp. ciliate protozoa
    Paramecium sp. ciliate protozoa — Stock Photo
    Paramecium sp. ciliate protozoa
    Cancerous tumour visualisation — Stock Photo
    Cancerous tumour visualisation
    Geranium pollen grain — Stock Photo
    Geranium pollen grain
    Paramecium ciliate protozoan — Stock Photo
    Paramecium ciliate protozoan
    Cancerous tumour visualisation — Stock Photo
    Cancerous tumour visualisation
    Geranium sp. pollen grain — Stock Photo
    Geranium sp. pollen grain
    Paramecium ciliate protozoan — Stock Photo
    Paramecium ciliate protozoan
    Phlox pollen grain — Stock Photo
    Phlox pollen grain
    Abutilon sp. pollen grain — Stock Photo
    Abutilon sp. pollen grain
    Primula pollen grain — Stock Photo
    Primula pollen grain
    Phlox pollen grain — Stock Photo
    Phlox pollen grain
    Diatom eukaryotic algae — Stock Photo
    Diatom eukaryotic algae
    Abutilon pollen grain — Stock Photo
    Abutilon pollen grain
    Eupodiscus sculptus diatom — Stock Photo
    Eupodiscus sculptus diatom
    Campylodiscus fastuosus diatom — Stock Photo
    Campylodiscus fastuosus diatom
    Skimmia sp. pollen grain — Stock Photo
    Skimmia sp. pollen grain
    Diatoms single-celled algae — Stock Photo
    Diatoms single-celled algae
    Diatom eukaryotic algae — Stock Photo
    Diatom eukaryotic algae
    Animal cell structure — Stock Photo
    Animal cell structure
    Rutilaria epsilon diatom — Stock Photo
    Rutilaria epsilon diatom
    Phytoplankton diatom Coscinodiscus sp — Stock Photo
    Phytoplankton diatom Coscinodiscus sp
    Puffball fungus spore — Stock Photo
    Puffball fungus spore
    Bacteriastrum sp. diatom algae — Stock Photo
    Bacteriastrum sp. diatom algae
    Diatoms single-celled algae — Stock Photo
    Diatoms single-celled algae
    Skimmia sp. pollen grain — Stock Photo
    Skimmia sp. pollen grain
    Visual rendering of Amoeba — Stock Photo
    Visual rendering of Amoeba
    Triceratium sp. diatom algae — Stock Photo
    Triceratium sp. diatom algae
    Diatoms single-celled algae — Stock Photo
    Diatoms single-celled algae
    Visual rendering of Amoeba — Stock Photo
    Visual rendering of Amoeba
    Visual rendering of Amoeba — Stock Photo
    Visual rendering of Amoeba
    Male sex cell — Stock Photo
    Male sex cell
    Male sex cell — Stock Photo
    Male sex cell
    Diatoms single-celled algae — Stock Photo
    Diatoms single-celled algae
    Puffball fungus spore — Stock Photo
    Puffball fungus spore
    Phytoplankton diatom Coscinodiscus sp — Stock Photo
    Phytoplankton diatom Coscinodiscus sp
    Marine planktonic unicellular alga — Stock Photo
    Marine planktonic unicellular alga
    Rutilaria epsilon diatom — Stock Photo
    Rutilaria epsilon diatom
    Fertilization showing sperm fertilizing an egg — Stock Photo
    Fertilization showing sperm fertilizing an egg
    Campylodiscus fastuosus diatom — Stock Photo
    Campylodiscus fastuosus diatom
    Bacteriastrum sp. diatom algae — Stock Photo
    Bacteriastrum sp. diatom algae
    Eupodiscus sculptus diatom — Stock Photo
    Eupodiscus sculptus diatom
    Triceratium sp. diatom algae — Stock Photo
    Triceratium sp. diatom algae