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    Colored scanning electron micrograph of pollen grains from convolvulus flower. — Stock Photo
    Colored scanning electron micrograph of pollen grains from convolvulus flower.
    Cat flea head — Stock Photo
    Cat flea head
    Heart strings strings — Stock Photo
    Heart strings strings
    Colored scanning electron micrograph of osteoblast osteocyte bone cell. — Stock Photo
    Colored scanning electron micrograph of osteoblast osteocyte bone cell.
    Ant head. Coloured scanning electron micrograph (SEM) of the head of an ant (family Formicidae). showing its large compound eyes (red) and jaws. Magnification: x50 when printed 10 centimetres wide. — Stock Photo
    Ant head. Coloured scanning electron micrograph (SEM) of the head of an ant (family Formicidae). showing its large compound eyes (red) and jaws. Magnification: x50 when printed 10 centimetres wide.
    Colored scanning electron micrograph of sectioned seminiferous tubule, site of sperm production in human testes. — Stock Photo
    Colored scanning electron micrograph of sectioned seminiferous tubule, site of sperm production in human testes.
    Skimmia sp. pollen grain — Stock Photo
    Skimmia sp. pollen grain
    Red blood cells — Stock Photo
    Red blood cells
    Streptomyces coelicoflavus bacteria — Stock Photo
    Streptomyces coelicoflavus bacteria
    Cells of brewer yeast — Stock Photo
    Cells of brewer yeast
    Activated platelet cells — Stock Photo
    Activated platelet cells
    Blood clotting in an ovarian follicle — Stock Photo
    Blood clotting in an ovarian follicle
    Cultured cancer cells — Stock Photo
    Cultured cancer cells
    Copepod, coloured scanning electron micrograph (SEM). — Stock Photo
    Copepod, coloured scanning electron micrograph (SEM).
    Snake red blood cells. Coloured scanning electron micrograph (SEM) of whole and fractured red blood cells (erythrocytes, red) in a small blood vessel of a snake — Stock Photo
    Snake red blood cells. Coloured scanning electron micrograph (SEM) of whole and fractured red blood cells (erythrocytes, red) in a small blood vessel of a snake
    Hair shafts growing from human skin — Stock Photo
    Hair shafts growing from human skin
    Rapeseed pollen grain — Stock Photo
    Rapeseed pollen grain
    Pollen threads and brochosomes — Stock Photo
    Pollen threads and brochosomes
    Campylobacter jejuni bacteria — Stock Photo
    Campylobacter jejuni bacteria
    Phlox pollen grain — Stock Photo
    Phlox pollen grain
    Bottlebrush pollen grain — Stock Photo
    Bottlebrush pollen grain
    Bottlebrush pollen grain — Stock Photo
    Bottlebrush pollen grain
    Fungal cells revealing sporangium with spores — Stock Photo
    Fungal cells revealing sporangium with spores
    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Colored scanning electron micrograph of coccoliths calcium carbonate plates from coccolithophore algal organisms. — Stock Photo
    Colored scanning electron micrograph of coccoliths calcium carbonate plates from coccolithophore algal organisms.
    Colored scanning electron micrograph of osteosarcoma bone cancer cell. — Stock Photo
    Colored scanning electron micrograph of osteosarcoma bone cancer cell.
    Red blood cells — Stock Photo
    Red blood cells
    Schizosaccharomyces pombe yeast — Stock Photo
    Schizosaccharomyces pombe yeast
    Strands of Actinomyces viscosus — Stock Photo
    Strands of Actinomyces viscosus
    Colored scanning electron micrograph of mains cable damaged by mouse teeth. — Stock Photo
    Colored scanning electron micrograph of mains cable damaged by mouse teeth.
    Fungal cells with sporangia and spores — Stock Photo
    Fungal cells with sporangia and spores
    Strawberry pollen grain — Stock Photo
    Strawberry pollen grain
    Morphology of Activated platelets — Stock Photo
    Morphology of Activated platelets
    Colored scanning electron micrograph of coccoliths calcium carbonate plates from coccolithophore algal organisms. — Stock Photo
    Colored scanning electron micrograph of coccoliths calcium carbonate plates from coccolithophore algal organisms.
    Collagen bundles from the delicate connective tissue — Stock Photo
    Collagen bundles from the delicate connective tissue
    Bougainvillea pollen grain — Stock Photo
    Bougainvillea pollen grain
    Diatom eukaryotic algae — Stock Photo
    Diatom eukaryotic algae
    Fly head anatomy — Stock Photo
    Fly head anatomy
    T lymphocyte cells attached to cancer cell — Stock Photo
    T lymphocyte cells attached to cancer cell
    Hyaline cartilage, a semi-rigid connective tissue — Stock Photo
    Hyaline cartilage, a semi-rigid connective tissue
    Horse chestnut pollen grain — Stock Photo
    Horse chestnut pollen grain
    Cat flea head — Stock Photo
    Cat flea head
    Colored scanning electron micrograph of variety of yeast species growing in larval tunnel of codling moth Cydia pomonella in mature apple. — Stock Photo
    Colored scanning electron micrograph of variety of yeast species growing in larval tunnel of codling moth Cydia pomonella in mature apple.
    Colored scanning electron micrograph of predatory ciliate protozoan Loxophyllum. — Stock Photo
    Colored scanning electron micrograph of predatory ciliate protozoan Loxophyllum.
    External mineralised structures of coccolithophores — Stock Photo
    External mineralised structures of coccolithophores
    Milkwort pollen grain — Stock Photo
    Milkwort pollen grain
    B-lymphocyte white blood cells — Stock Photo
    B-lymphocyte white blood cells
    Staphylococcus aureus coccoid bacteria, colored scanning electron micrograph. — Stock Photo
    Staphylococcus aureus coccoid bacteria, colored scanning electron micrograph.
    Cat flea head — Stock Photo
    Cat flea head
    Red blood cells — Stock Photo
    Red blood cells
    Leukaemia blood cells — Stock Photo
    Leukaemia blood cells
    Hair shafts growing from human skin — Stock Photo
    Hair shafts growing from human skin
    Fractured bladder stone — Stock Photo
    Fractured bladder stone
    Phytoplankton diatom Coscinodiscus sp — Stock Photo
    Phytoplankton diatom Coscinodiscus sp
    Immature dog sperm — Stock Photo
    Immature dog sperm
    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Male sex cell — Stock Photo
    Male sex cell
    Kidney glomeruli. Coloured scanning electron micrograph (SEM) of a resin cast of glomeruli capillaries and the larger blood vessels supplying them with blood — Stock Photo
    Kidney glomeruli. Coloured scanning electron micrograph (SEM) of a resin cast of glomeruli capillaries and the larger blood vessels supplying them with blood
    Fly larva head anatomy — Stock Photo
    Fly larva head anatomy
    Sporangium fungal cell with spores — Stock Photo
    Sporangium fungal cell with spores