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    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
    Stick insect foot — Stock Photo
    Stick insect foot
    Osteoporotic bone abnormality — Stock Photo
    Osteoporotic bone abnormality
    Fungal cells showing sporangium — Stock Photo
    Fungal cells showing sporangium
    Acinar pancreatic cell — Stock Photo
    Acinar pancreatic cell
    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
    Cat flea head — Stock Photo
    Cat flea head
    Trachea lining. Coloured transmission electron micrograph (TEM) of a longitudinal section through the lining of the trachea (windpipe), which links the larynx (voicebox) to the lungs — Stock Photo
    Trachea lining. Coloured transmission electron micrograph (TEM) of a longitudinal section through the lining of the trachea (windpipe), which links the larynx (voicebox) to the lungs
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    Colored scanning electron micrograph of pollen grains from Nymphaeaceae water lily flower. — Stock Photo
    Colored scanning electron micrograph of pollen grains from Nymphaeaceae water lily flower.
    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.
    Strands of Actinomyces viscosus — Stock Photo
    Strands of Actinomyces viscosus
    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.
    Cat flea head — Stock Photo
    Cat flea head
    Morphology of Activated platelets — Stock Photo
    Morphology of Activated platelets
    Red blood cells — Stock Photo
    Red blood cells
    Cells of brewer yeast — Stock Photo
    Cells of brewer yeast
    Immature dog sperm — Stock Photo
    Immature dog sperm
    Streptomyces coelicoflavus bacteria — Stock Photo
    Streptomyces coelicoflavus bacteria
    Blood clot structure — Stock Photo
    Blood clot structure
    Staphylococcus bacteria cluster — Stock Photo
    Staphylococcus bacteria cluster
    Fractured myelinated nerve fibres — Stock Photo
    Fractured myelinated nerve fibres
    Red blood cells aggregated — Stock Photo
    Red blood cells aggregated
    Scale insects. Coloured scanning electron micrograph (SEM) of scale insects (superfamily Coccoidea) on a leaf. This pest feeds on the plant's sap. It secretes a powdery wax coating that protects it against pesticides and predators — Stock Photo
    Scale insects. Coloured scanning electron micrograph (SEM) of scale insects (superfamily Coccoidea) on a leaf. This pest feeds on the plant's sap. It secretes a powdery wax coating that protects it against pesticides and predators
    Colored scanning electron micrograph of bundles of sensory cilia cells in macula utriculi within labyrinth of human inner ear. — Stock Photo
    Colored scanning electron micrograph of bundles of sensory cilia cells in macula utriculi within labyrinth of human inner ear.
    Phlox pollen grain — Stock Photo
    Phlox pollen grain
    Diatom eukaryotic algae — Stock Photo
    Diatom eukaryotic algae
    Colored scanning electron micrograph of predatory ciliate protozoan Loxophyllum. — Stock Photo
    Colored scanning electron micrograph of predatory ciliate protozoan Loxophyllum.
    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
    Red blood cells and platelets — Stock Photo
    Red blood cells and platelets
    Quartz crystals structure — Stock Photo
    Quartz crystals structure
    Skeletal muscle fibres — Stock Photo
    Skeletal muscle fibres
    Milkwort pollen grain — Stock Photo
    Milkwort pollen grain
    Staphylococcus bacteria cluster — Stock Photo
    Staphylococcus bacteria cluster
    Surface of a fallopian tube — Stock Photo
    Surface of a fallopian tube
    Male sex cell — Stock Photo
    Male sex cell
    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. Magnification: x5000 when printed at 10 centimetres wide — 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. Magnification: x5000 when printed at 10 centimetres wide
    Blood clot formation — Stock Photo
    Blood clot formation
    Cilia covering the epithelial lining of the nasopharyx — Stock Photo
    Cilia covering the epithelial lining of the nasopharyx
    Lymphoma cancer cell. Coloured scanning electron micrograph (SEM) of a lymphoma cell showing early apoptotic changes. A lymphoma is a cell of the immune system that has become cancerous. The cell becomes immortal and can grow indefinitely — Stock Photo
    Lymphoma cancer cell. Coloured scanning electron micrograph (SEM) of a lymphoma cell showing early apoptotic changes. A lymphoma is a cell of the immune system that has become cancerous. The cell becomes immortal and can grow indefinitely
    Osteoblasts. Colored transmission electron micrograph (TEM) of osteoblasts, bone-producing cells (purple and pink). They contain rough endoplasmic reticulum (RER), which produces, modifies and transports proteins, and nucleus — Stock Photo
    Osteoblasts. Colored transmission electron micrograph (TEM) of osteoblasts, bone-producing cells (purple and pink). They contain rough endoplasmic reticulum (RER), which produces, modifies and transports proteins, and nucleus
    Intestinal microvilli. Coloured transmission electron micrograph (TEM) of a section through microvilli from the small intestine. These tiny structures (cyan) form a dense brush-like covering on the absorptive surfaces of the cells — Stock Photo
    Intestinal microvilli. Coloured transmission electron micrograph (TEM) of a section through microvilli from the small intestine. These tiny structures (cyan) form a dense brush-like covering on the absorptive surfaces of the cells
    Milkwort pollen grain — Stock Photo
    Milkwort pollen grain
    Phlox pollen grain — Stock Photo
    Phlox pollen grain
    Feet bacteria. Coloured scanning electron micrograph (SEM) of bacteria cultured from between toes of foot — Stock Photo
    Feet bacteria. Coloured scanning electron micrograph (SEM) of bacteria cultured from between toes of foot
    Od shaped bacteria Tragelaphus — Stock Photo
    Od shaped bacteria Tragelaphus
    Red blood cells aggregated — Stock Photo
    Red blood cells aggregated
    Od shaped bacteria Tragelaphus — Stock Photo
    Od shaped bacteria Tragelaphus
    Tendon showing bundles of collagen fibres — Stock Photo
    Tendon showing bundles of collagen fibres
    Nanostructures formed on a silicon surface — Stock Photo
    Nanostructures formed on a silicon surface
    Scanning electron micrograph of dermestid beetle head. — Stock Photo
    Scanning electron micrograph of dermestid beetle head.
    Red blood cells and platelets — Stock Photo
    Red blood cells and platelets
    Varicella zoster virus particle — Stock Photo
    Varicella zoster virus particle
    Escherichia coli bacteria — Stock Photo
    Escherichia coli bacteria
    Angel trumpets pollen grain — Stock Photo
    Angel trumpets pollen grain
    Bougainvillea pollen grain — Stock Photo
    Bougainvillea pollen grain
    Osteoblasts. Colored transmission electron micrograph (TEM) of osteoblasts, bone-producing cells (purple and pink). They contain rough endoplasmic reticulum (RER), which produces, modifies and transports proteins, and nucleus — Stock Photo
    Osteoblasts. Colored transmission electron micrograph (TEM) of osteoblasts, bone-producing cells (purple and pink). They contain rough endoplasmic reticulum (RER), which produces, modifies and transports proteins, and nucleus
    Influenza viruses budding from host cell — Stock Photo
    Influenza viruses budding from host cell
    Escherichia coli bacteria — Stock Photo
    Escherichia coli bacteria
    Osteoporotic bone abnormality — Stock Photo
    Osteoporotic bone abnormality