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    Ophthalmologist performing eye surgery on female patient in clinic. — Stock Photo
    Ophthalmologist performing eye surgery on female patient in clinic.
    Morphology of Activated platelets — Stock Photo
    Morphology of Activated platelets
    Onion cells undergoing mitosis — Stock Photo
    Onion cells undergoing mitosis
    Section through an osteoid osteoma — Stock Photo
    Section through an osteoid osteoma
    Laboratory worker pipetting liquid into microcentrifuge tube. — Stock Photo
    Laboratory worker pipetting liquid into microcentrifuge tube.
    Retina. Light micrograph (LM) of a section through a retina. The eye works by allowing light to be focused by the lens onto the retina — Stock Photo
    Retina. Light micrograph (LM) of a section through a retina. The eye works by allowing light to be focused by the lens onto the retina
    Coloured scanning electron micrograph of cancer cells migrating down pores. — Stock Photo
    Coloured scanning electron micrograph of cancer cells migrating down pores.
    Fertilization of human egg — Stock Photo
    Fertilization of human egg
    Tendon, coloured scanning electron micrograph (SEM), showing bundles of collagen fibres. The parallel alignment of the fibres make tendons inelastic but flexible. Tendons attach muscle to bone — Stock Photo
    Tendon, coloured scanning electron micrograph (SEM), showing bundles of collagen fibres. The parallel alignment of the fibres make tendons inelastic but flexible. Tendons attach muscle to bone
    Prostate cancer cell, coloured scanning electron micrograph. — Stock Photo
    Prostate cancer cell, coloured scanning electron micrograph.
    Coloured scanning electron micrograph of surface of prostate cancer cells. — Stock Photo
    Coloured scanning electron micrograph of surface of prostate cancer cells.
    Cross-section of spinal cord, light micrograph. — Stock Photo
    Cross-section of spinal cord, light micrograph.
    Osteoporotic bone abnormality — Stock Photo
    Osteoporotic bone abnormality
    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).
    Mouse mammary tumour virus (MMTV) particles (blue), coloured transmission electron micrograph (TEM). MMTV induces malignant tumours in the mammary glands of certain strains of laboratory mice — Stock Photo
    Mouse mammary tumour virus (MMTV) particles (blue), coloured transmission electron micrograph (TEM). MMTV induces malignant tumours in the mammary glands of certain strains of laboratory mice
    Bone cancer cells. Coloured scanning electron micrograph of osteosarcoma cancer cells. Osteosarcoma is an aggressive malignant neoplasm arising from primitive transformed mesenchymal cells — Stock Photo
    Bone cancer cells. Coloured scanning electron micrograph of osteosarcoma cancer cells. Osteosarcoma is an aggressive malignant neoplasm arising from primitive transformed mesenchymal cells
    Fungal cells showing sporangium — Stock Photo
    Fungal cells showing sporangium
    Scientists viewing sample on glass slide under light microscope. — Stock Photo
    Scientists viewing sample on glass slide under light microscope.
    Epithelium from a fallopian tube — Stock Photo
    Epithelium from a fallopian tube
    Red blood cells. Coloured scanning electron micrograph (SEM) of red blood cells (RBCs, erythrocytes). Red blood cells are biconcave, disc-shaped cells that transport oxygen from the lungs to body cells — Stock Photo
    Red blood cells. Coloured scanning electron micrograph (SEM) of red blood cells (RBCs, erythrocytes). Red blood cells are biconcave, disc-shaped cells that transport oxygen from the lungs to body cells
    Od shaped bacteria Tragelaphus — Stock Photo
    Od shaped bacteria Tragelaphus
    Colored scanning electron micrograph showing urethral epithelium of urethra. — Stock Photo
    Colored scanning electron micrograph showing urethral epithelium of urethra.
    Female researcher using light microscope for examining stem cells in culture jar. — Stock Photo
    Female researcher using light microscope for examining stem cells in culture jar.
    Female technician in white coat using microscope. — Stock Photo
    Female technician in white coat using microscope.
    Hair follicles structure — Stock Photo
    Hair follicles structure
    Large thrombus formation — Stock Photo
    Large thrombus formation
    Flowering currant pollen — Stock Photo
    Flowering currant pollen
    Section through a wart — Stock Photo
    Section through a wart
    Coxsackievirus enterovirus virus particles, digital illustration. — Stock Photo
    Coxsackievirus enterovirus virus particles, digital illustration.
    Tendon showing bundles of collagen fibres — Stock Photo
    Tendon showing bundles of collagen fibres
    Bone marrow cellular structure — Stock Photo
    Bone marrow cellular structure
    Helianthus stem. Light micrograph (LM) of stem of perennial sunflower (Helianthus sp.) in cross-section showing vascular bundles (green, yellow). Vascular tissues transport water and dissolved substances inside plant — Stock Photo
    Helianthus stem. Light micrograph (LM) of stem of perennial sunflower (Helianthus sp.) in cross-section showing vascular bundles (green, yellow). Vascular tissues transport water and dissolved substances inside plant
    Bone marrow cellular structure — Stock Photo
    Bone marrow cellular structure
    Closeup extreme magnified unusual fly of orange and purple color with antennae — Stock Photo
    Closeup extreme magnified unusual fly of orange and purple color with antennae
    Closeup view of scientist analyzing bacterial colonies — Stock Photo
    Closeup view of scientist analyzing bacterial colonies
    Staphylococcus bacteria cluster — Stock Photo
    Staphylococcus bacteria cluster
    Section through a lily stem — Stock Photo
    Section through a lily stem
    Coloured scanning electron micrograph of cancer cells from colon. — Stock Photo
    Coloured scanning electron micrograph of cancer cells from colon.
    Hair follicles structure — Stock Photo
    Hair follicles structure
    Intestinal brush border in small intestine showing numerous microvilli, colored transmission electron micrograph. — Stock Photo
    Intestinal brush border in small intestine showing numerous microvilli, colored transmission electron micrograph.
    Man introducing plate into machine and microscope — Stock Photo
    Man introducing plate into machine and microscope
    Microscopes on desk in lab — Stock Photo
    Microscopes on desk in lab
    Blood clot or thrombus — Stock Photo
    Blood clot or thrombus
    Strawberry pollen grain — Stock Photo
    Strawberry pollen grain
    Methicillin-resistant Staphylococcus aureus — Stock Photo
    Methicillin-resistant Staphylococcus aureus
    Side view focused male expert in lab coat gloves examining samples through powerful microscope lenses while working in modern equipped laboratory — Stock Photo
    Side view focused male expert in lab coat gloves examining samples through powerful microscope lenses while working in modern equipped laboratory
    Striated muscle. Coloured transmission electron micrograph (TEM) of a longitudinal section through striated skeletal muscle. The striated banding-pattern of the muscle fibrils is seen — Stock Photo
    Striated muscle. Coloured transmission electron micrograph (TEM) of a longitudinal section through striated skeletal muscle. The striated banding-pattern of the muscle fibrils is seen
    Female researcher analyzing samples with microscope in the laboratory — Stock Photo
    Female researcher analyzing samples with microscope in the laboratory
    Mature scientist using microscope for biological research. — Stock Photo
    Mature scientist using microscope for biological research.
    Magnified digital illustration of mast cell. — Stock Photo
    Magnified digital illustration of mast cell.
    Hand of scientist researching sample on microscope slide under light microscope. — Stock Photo
    Hand of scientist researching sample on microscope slide under light microscope.
    Bacteria from a coin. Coloured scanning electron micrograph (SEM) of bacteria cultured from a english one pound coin — Stock Photo
    Bacteria from a coin. Coloured scanning electron micrograph (SEM) of bacteria cultured from a english one pound coin
    Hands of scientist researching sample on microscope slide under light microscope. — Stock Photo
    Hands of scientist researching sample on microscope slide under light microscope.
    Colored scanning electron micrograph of Streptococcus mutans anaerobic bacteria in normal bacteria flora of mouth. — Stock Photo
    Colored scanning electron micrograph of Streptococcus mutans anaerobic bacteria in normal bacteria flora of mouth.
    Girl looking under microscope at worm. — Stock Photo
    Girl looking under microscope at worm.
    Simple squamous epithelium, digital illustration. — Stock Photo
    Simple squamous epithelium, digital illustration.
    Cells of brewer yeast — Stock Photo
    Cells of brewer yeast
    Young pine tree stem — Stock Photo
    Young pine tree stem
    Forensic scientist using 3d stereo microscope for examining markings on bullet. — Stock Photo
    Forensic scientist using 3d stereo microscope for examining markings on bullet.
    Close up of microscope in laboratory — Stock Photo
    Close up of microscope in laboratory