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    Coloured scanning electron micrograph (SEM) of stubble on a man's face. — Stock Photo
    Coloured scanning electron micrograph (SEM) of stubble on a man's face.
    Recovery room in a modern hospital, post-operative recovery, patient bays with curtains — Stock Photo
    Recovery room in a modern hospital, post-operative recovery, patient bays with curtains
    Activated platelet from peripheral blood — Stock Photo
    Activated platelet from peripheral blood
    Coloured scanning electron micrograph (SEM) of the interior of bone from a bird skull. — Stock Photo
    Coloured scanning electron micrograph (SEM) of the interior of bone from a bird skull.
    Caterpillar hairs. Coloured scanning electron micrograph (SEM) of hairs from the vapourer moth (Orgyia antiqua) caterpillar. — Stock Photo
    Caterpillar hairs. Coloured scanning electron micrograph (SEM) of hairs from the vapourer moth (Orgyia antiqua) caterpillar.
    Waiting area and reception desk at a modern hospital, with signs and electronic display — Stock Photo
    Waiting area and reception desk at a modern hospital, with signs and electronic display
    Teenage girls using cell phone and digital tablets — Stock Photo
    Teenage girls using cell phone and digital tablets
    Heart strings strings — Stock Photo
    Heart strings strings
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Pollen grains from a bellflower — Stock Photo
    Pollen grains from a bellflower
    Helicobacter pylori bacterium — Stock Photo
    Helicobacter pylori bacterium
    Fungal cells with sporangia and spores — Stock Photo
    Fungal cells with sporangia and spores
    Mature woman using digital table to shop online — Stock Photo
    Mature woman using digital table to shop online
    Components of house dust — Stock Photo
    Components of house dust
    Diatoms single-celled algae — Stock Photo
    Diatoms single-celled algae
    Business people talking in meeting in modern office — Stock Photo
    Business people talking in meeting in modern office
    Couple paying bills at digital tablet at dining table — Stock Photo
    Couple paying bills at digital tablet at dining table
    Male sex cell — Stock Photo
    Male sex cell
    Streptomyces coelicoflavus bacteria — Stock Photo
    Streptomyces coelicoflavus bacteria
    Clothes moth wing scales — Stock Photo
    Clothes moth wing scales
    Colored digital illustration of parasitic dust mites. — Stock Photo
    Colored digital illustration of parasitic dust mites.
    Escherichia coli bacteria — Stock Photo
    Escherichia coli bacteria
    Coloured scanning electron micrograph (SEM) of a freeze-fractured Nasturtium stem, showing numerous vascular bundles (such as at upper centre) with an inner xylem (pink) and outer phloem (yellow). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a freeze-fractured Nasturtium stem, showing numerous vascular bundles (such as at upper centre) with an inner xylem (pink) and outer phloem (yellow).
    Architects working on a green construction project — Stock Photo
    Architects working on a green construction project
    Laughing mature women sharing digital tablet at breakfast table — Stock Photo
    Laughing mature women sharing digital tablet at breakfast table
    Mobile phone circuit board, full frame. — Stock Photo
    Mobile phone circuit board, full frame.
    Fungal cells showing sporangium — Stock Photo
    Fungal cells showing sporangium
    Mother and daughters with cell phone, laptop and digital tablet on sofa — Stock Photo
    Mother and daughters with cell phone, laptop and digital tablet on sofa
    Man repairing an electronic device using soldering iron in service center — Stock Photo
    Man repairing an electronic device using soldering iron in service center
    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
    Multi-ethnic young family online shopping with credit card at laptop — Stock Photo
    Multi-ethnic young family online shopping with credit card at laptop
    Freshwater single diatom — Stock Photo
    Freshwater single diatom
    Od shaped bacteria Tragelaphus — Stock Photo
    Od shaped bacteria Tragelaphus
    Atmospheric view of silhouette of crowd at concert — Stock Photo
    Atmospheric view of silhouette of crowd at concert
    Coloured scanning electron micrograph (SEM) of a dental root canal file. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a dental root canal file.
    Casual businessman with headphones and digital tablet — Stock Photo
    Casual businessman with headphones and digital tablet
    Puffball fungus spore — Stock Photo
    Puffball fungus spore
    Crenated red blood cells — Stock Photo
    Crenated red blood cells
    Portrait smiling senior woman in sweater holding digital tablet — Stock Photo
    Portrait smiling senior woman in sweater holding digital tablet
    Pyoderma skin disease — Stock Photo
    Pyoderma skin disease
    Clematis montana pollen — Stock Photo
    Clematis montana pollen
    Passion flower pollen — Stock Photo
    Passion flower pollen
    Campylobacter jejuni bacteria — Stock Photo
    Campylobacter jejuni bacteria
    Colored scanning electron micrograph of osteosarcoma bone cancer cell. — Stock Photo
    Colored scanning electron micrograph of osteosarcoma bone cancer cell.
    Dendritic cells of immune system — Stock Photo
    Dendritic cells of immune system
    Small intestine. Coloured scanning electron micrograph (SEM) of a freeze-fractured of the small intestine. The surface consists of deep folds, called villi. The intestinal surface( pink) is exposed to food — Stock Photo
    Small intestine. Coloured scanning electron micrograph (SEM) of a freeze-fractured of the small intestine. The surface consists of deep folds, called villi. The intestinal surface( pink) is exposed to food
    Portrait of handsome man using electronic book — Stock Photo
    Portrait of handsome man using electronic book
    Eleven year-old bi-racial girl working on laptop on bed — Stock Photo
    Eleven year-old bi-racial girl working on laptop on bed
    Grandfather and grandsons relaxing in doorway — Stock Photo
    Grandfather and grandsons relaxing in doorway
    Colored scanning electron micrograph of stem cell-derived motor neuron cell. — Stock Photo
    Colored scanning electron micrograph of stem cell-derived motor neuron cell.
    Male computer programmer programming electronics in workshop — Stock Photo
    Male computer programmer programming electronics in workshop
    Colored digital illustration of parasitic dust mites. — Stock Photo
    Colored digital illustration of parasitic dust mites.
    Coloured scanning electron micrograph of human cancellous spongy bone tissue. — Stock Photo
    Coloured scanning electron micrograph of human cancellous spongy bone tissue.
    Pacemaker in heart disease — Stock Photo
    Pacemaker in heart disease
    Pollen threads and brochosomes — Stock Photo
    Pollen threads and brochosomes
    Tumour filling an alveolus of the human lung — Stock Photo
    Tumour filling an alveolus of the human lung
    Hair follicles. Coloured scanning electron micrograph (SEM). The outer layer of hair (the cuticle) has overlapping scales of keratin. These scales are thought to prevent hairs from matting together — Stock Photo
    Hair follicles. Coloured scanning electron micrograph (SEM). The outer layer of hair (the cuticle) has overlapping scales of keratin. These scales are thought to prevent hairs from matting together
    Coloured scanning electron micrograph (SEM) of squamous epithelial cells on the skin surface. — Stock Photo
    Coloured scanning electron micrograph (SEM) of squamous epithelial cells on the skin surface.
    Coloured scanning electron micrograph intricately structured microscopic brochosomes granules secreted by leafhopper. — Stock Photo
    Coloured scanning electron micrograph intricately structured microscopic brochosomes granules secreted by leafhopper.
    Woody stem section. Coloured scanning electron micrograph (SEM) of a transverse section through the stem of a woody plant. The majority of tissue seen here is secondary xylem (dark brown) — Stock Photo
    Woody stem section. Coloured scanning electron micrograph (SEM) of a transverse section through the stem of a woody plant. The majority of tissue seen here is secondary xylem (dark brown)