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    Freshwater single diatom — Stock Photo
    Freshwater single diatom
    Crop male hand with electronic book tablet — Stock Photo
    Crop male hand with electronic book tablet
    Scanning electron micrograph of bacterial culture from sputum. — Stock Photo
    Scanning electron micrograph of bacterial culture from sputum.
    Dividing prostate cancer cells, coloured scanning electron micrograph. — Stock Photo
    Dividing prostate cancer cells, coloured scanning electron micrograph.
    Portrait of smiling airport security officer holding metal detector in airport terminal — Stock Photo
    Portrait of smiling airport security officer holding metal detector in airport terminal
    Earthworm coloured scanning electron micrograph — Stock Photo
    Earthworm coloured scanning electron micrograph
    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
    Parasitic dust mite on white background, digital illustration. — Stock Photo
    Parasitic dust mite on white background, digital illustration.
    Lymphocyte white blood cell — Stock Photo
    Lymphocyte white blood cell
    Red blood cells — Stock Photo
    Red blood cells
    Pacemaker in heart disease — Stock Photo
    Pacemaker in heart disease
    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
    Boy with laptop sitting on pile of books — Stock Photo
    Boy with laptop sitting on pile of books
    Diatoms. Coloured scanning electron micrograph (SEM) of Campylodiscus species diatoms. The diatoms are a group of photosynthetic, single-celled algae containing about 100, 000 species — Stock Photo
    Diatoms. Coloured scanning electron micrograph (SEM) of Campylodiscus species diatoms. The diatoms are a group of photosynthetic, single-celled algae containing about 100, 000 species
    Fungal cells showing sporangium — Stock Photo
    Fungal cells showing sporangium
    Smiling mother with laptop paying bills online with family in background — Stock Photo
    Smiling mother with laptop paying bills online with family in background
    Geranium pollen grain — Stock Photo
    Geranium pollen grain
    Pregnant mother and daughter using digital tablet in airport departure area — Stock Photo
    Pregnant mother and daughter using digital tablet in airport departure area
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Staphylococcus aureus coccoid bacteria, colored scanning electron micrograph. — Stock Photo
    Staphylococcus aureus coccoid bacteria, colored scanning electron micrograph.
    Male sex cell — Stock Photo
    Male sex cell
    Surface of the foot of a common pollen beetle — Stock Photo
    Surface of the foot of a common pollen beetle
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Coloured scanning electron micrograph of tardigrade water bear. — Stock Photo
    Coloured scanning electron micrograph of tardigrade water bear.
    Horse chestnut pollen grain — Stock Photo
    Horse chestnut pollen grain
    Portrait smiling female engineer assembling circuit board in workshop — Stock Photo
    Portrait smiling female engineer assembling circuit board in workshop
    Blood clot or thrombus — Stock Photo
    Blood clot or thrombus
    Activated T lymphocytes and red blood cells on scanning electron micrograph. — Stock Photo
    Activated T lymphocytes and red blood cells on scanning electron micrograph.
    Man using digital tablet on bed — Stock Photo
    Man using digital tablet on bed
    Young asian female doctor with report in a practice — Stock Photo
    Young asian female doctor with report in a practice
    Recovery room outside the operating theatre in a hospital. Drapes, blue curtains around patient bays — Stock Photo
    Recovery room outside the operating theatre in a hospital. Drapes, blue curtains around patient bays
    Businesswoman using digital tablet in lobby at modern office — Stock Photo
    Businesswoman using digital tablet in lobby at modern office
    Stagnant water bacteria — Stock Photo
    Stagnant water bacteria
    Close-up of machine in blood bank — Stock Photo
    Close-up of machine in blood bank
    Campylodiscus fastuosus diatom — Stock Photo
    Campylodiscus fastuosus diatom
    Pharmaceutical research. Potential new medicines and vaccines on electron micrograph of virus — Stock Photo
    Pharmaceutical research. Potential new medicines and vaccines on electron micrograph of virus
    Ovarian cancer cells, coloured scanning electron micrograph. — Stock Photo
    Ovarian cancer cells, coloured scanning electron micrograph.
    Coloured scanning electron micrograph (SEM) of a section through wood showing the phloem vessels (dark green holes) and xylem tissue (lower frame). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through wood showing the phloem vessels (dark green holes) and xylem tissue (lower frame).
    Aulacodiscus oregonus diatom — Stock Photo
    Aulacodiscus oregonus diatom
    Patient faciities in a modern hospital, beds and patient bays, electronic equipment and curtains — Stock Photo
    Patient faciities in a modern hospital, beds and patient bays, electronic equipment and curtains
    Mature virus and budding release of HIV — Stock Photo
    Mature virus and budding release of HIV
    T lymphocyte cells attached to cancer cell — Stock Photo
    T lymphocyte cells attached to cancer cell
    Group of friends looking at the tablet in Madrid, Spain — Stock Photo
    Group of friends looking at the tablet in Madrid, Spain
    Family using electronics gadget — Stock Photo
    Family using electronics gadget
    Villi from the lining of the jejunum — Stock Photo
    Villi from the lining of the jejunum
    College students studying with coffee, laptop and digital tablet — Stock Photo
    College students studying with coffee, laptop and digital tablet
    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
    Laughing mature women sharing digital tablet at breakfast table — Stock Photo
    Laughing mature women sharing digital tablet at breakfast table
    Coloured scanning electron micrograph of Staphylococcus aureus bacteria. — Stock Photo
    Coloured scanning electron micrograph of Staphylococcus aureus bacteria.
    Colored scanning electron micrograph of metal nanoparticles formed by laser ablation. — Stock Photo
    Colored scanning electron micrograph of metal nanoparticles formed by laser ablation.
    Vaccinia virus particle — Stock Photo
    Vaccinia virus particle
    Girl watching on digital tablet — Stock Photo
    Girl watching on digital tablet
    Water flea (Polyphemus pediculus), coloured scanning electron micrograph (SEM). — Stock Photo
    Water flea (Polyphemus pediculus), coloured scanning electron micrograph (SEM).
    Sperm cells in seminiferous tubules — Stock Photo
    Sperm cells in seminiferous tubules
    Happy father and son using electronic gadgets in garden — Stock Photo
    Happy father and son using electronic gadgets in garden
    Student in wheelchair studying furnace electronic control system in HVAC classroom — Stock Photo
    Student in wheelchair studying furnace electronic control system in HVAC classroom
    Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is blue. Mitochondria (cyan)) in the cell's cytoplasm produce energy for the cell. Lysosomes (red) contain enzymes for digesting foreign particles. M — Stock Photo
    Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is blue. Mitochondria (cyan)) in the cell's cytoplasm produce energy for the cell. Lysosomes (red) contain enzymes for digesting foreign particles. M
    Colored scanning electron micrograph of cancellous bone tissue from starling bird skull. — Stock Photo
    Colored scanning electron micrograph of cancellous bone tissue from starling bird skull.
    Seminiferous tubules and lending cells — Stock Photo
    Seminiferous tubules and lending cells