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    Coloured scanning electron micrograph (SEM) of immature dog sperm. — Stock Photo
    Coloured scanning electron micrograph (SEM) of immature dog sperm.
    Women sitting on the staircase at Retiro Park, Spain — Stock Photo
    Women sitting on the staircase at Retiro Park, Spain
    Woman connecting to social media using digital tablet — Stock Photo
    Woman connecting to social media using digital tablet
    Blood clot structure — Stock Photo
    Blood clot structure
    Resting T lymphocytes. Coloured scanning electron micrograph (SEM) of resting T lymphocytes from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system — Stock Photo
    Resting T lymphocytes. Coloured scanning electron micrograph (SEM) of resting T lymphocytes from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system
    Collagen bundles from the delicate connective tissue — Stock Photo
    Collagen bundles from the delicate connective tissue
    Young woman in wheelchair using laptop at table — Stock Photo
    Young woman in wheelchair using laptop at table
    Man using digital tablet on bed — Stock Photo
    Man using digital tablet on bed
    Older man using digital tablet on sofa — Stock Photo
    Older man using digital tablet on sofa
    Stagnant water bacteria — Stock Photo
    Stagnant water bacteria
    Pancreatic cancer cells — Stock Photo
    Pancreatic cancer cells
    Senior man using digital tablet — Stock Photo
    Senior man using digital tablet
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Sperm cell with multiple tails — Stock Photo
    Sperm cell with multiple tails
    Escherichia coli bacteria — Stock Photo
    Escherichia coli bacteria
    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
    Marine pennate diatom frustule — Stock Photo
    Marine pennate diatom frustule
    Coloured scanning electron micrograph of Staphylococcus aureus bacteria. — Stock Photo
    Coloured scanning electron micrograph of Staphylococcus aureus bacteria.
    Young asian female doctor with report in a practice — Stock Photo
    Young asian female doctor with report in a practice
    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
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Chinese couple buying air conditioner in electronics store — Stock Photo
    Chinese couple buying air conditioner in electronics store
    Mobile phone speaker, colored scanning electron micrograph. — Stock Photo
    Mobile phone speaker, colored scanning electron micrograph.
    Couple paying bills online, using fingerprint log on at digital tablet — Stock Photo
    Couple paying bills online, using fingerprint log on at digital tablet
    Fat (adipose) tissue, coloured scanning electron micrograph (SEM). The fat cells (adipocytes, round) are surrounded by collagen fibres. — Stock Photo
    Fat (adipose) tissue, coloured scanning electron micrograph (SEM). The fat cells (adipocytes, round) are surrounded by collagen fibres.
    Sporangium fungal cell with spores — Stock Photo
    Sporangium fungal cell with spores
    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
    Komodo dragon skin, coloured scanning electron micrograph (SEM). The Komodo dragon (Varanus komodoensis) has armoured scaly skin. It is the largest lizard in the world, reaching over three metres in length — Stock Photo
    Komodo dragon skin, coloured scanning electron micrograph (SEM). The Komodo dragon (Varanus komodoensis) has armoured scaly skin. It is the largest lizard in the world, reaching over three metres in length
    Myelinated nerve fibres — Stock Photo
    Myelinated nerve fibres
    Scanning electron micrograph of bacterial culture from sputum. — Stock Photo
    Scanning electron micrograph of bacterial culture from sputum.
    Colored scanning electron micrograph of human red blood cells erythrocytes, white blood cells leukocytes and platelet thrombocyte. — Stock Photo
    Colored scanning electron micrograph of human red blood cells erythrocytes, white blood cells leukocytes and platelet thrombocyte.
    Close up boy with headphones listening to music on digital tablet — Stock Photo
    Close up boy with headphones listening to music on digital tablet
    Streptomyces coelicoflavus bacteria — Stock Photo
    Streptomyces coelicoflavus bacteria
    Smiling senior man using digital tablet on patio — Stock Photo
    Smiling senior man using digital tablet on patio
    Coloured scanning electron micrograph (SEM) of a tardigrade (Macrobiotus sp.), or water bear. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a tardigrade (Macrobiotus sp.), or water bear.
    Asparagus beetle head — Stock Photo
    Asparagus beetle head
    Freshwater single diatom — Stock Photo
    Freshwater single diatom
    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
    Weevil (Sitophilus sp.), coloured scanning electron micrograph (SEM). This weevil is a major agricultural pest. It primarily attacks stored grains and fruits, feeding on them with its often elongated snout, or rostrum — Stock Photo
    Weevil (Sitophilus sp.), coloured scanning electron micrograph (SEM). This weevil is a major agricultural pest. It primarily attacks stored grains and fruits, feeding on them with its often elongated snout, or rostrum
    Architectural plans and a computer tablet. — Stock Photo
    Architectural plans and a computer tablet.
    Girl watching on digital tablet — Stock Photo
    Girl watching on digital tablet
    Coloured scanning electron micrograph of macrophage white blood cell. — Stock Photo
    Coloured scanning electron micrograph of macrophage white blood cell.
    Senior woman with headphones working at laptop on yoga mat at home — Stock Photo
    Senior woman with headphones working at laptop on yoga mat at home
    Architects working on a green construction project — Stock Photo
    Architects working on a green construction project
    Coloured scanning electron micrograph (SEM) of a section through a muscle fibre. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through a muscle fibre.
    Family using electronics gadget — Stock Photo
    Family using electronics gadget
    Business people meeting around digital tablet — Stock Photo
    Business people meeting around digital tablet
    Freshwater single diatom — Stock Photo
    Freshwater single diatom
    External mineralised structures of coccolithophores — Stock Photo
    External mineralised structures of coccolithophores
    Dividing prostate gland cancer cells, colored scanning electron micrograph. — Stock Photo
    Dividing prostate gland cancer cells, colored scanning electron micrograph.
    Nanostructures formed on a titanium surface — Stock Photo
    Nanostructures formed on a titanium surface
    Young adult asian man using digital tablet at home — Stock Photo
    Young adult asian man using digital tablet at home
    Diatom eukaryotic algae — Stock Photo
    Diatom eukaryotic algae
    Modern machine in blood bank — Stock Photo
    Modern machine in blood bank
    Close-up of machine in blood bank — Stock Photo
    Close-up of machine in blood bank
    Horse chestnut leaf. Coloured scanning electron micrograph (SEM) of the underside of a horse chestnut leaf (Aesculus hippocastanum) Numerous hairs (trichomes) cover the surface — Stock Photo
    Horse chestnut leaf. Coloured scanning electron micrograph (SEM) of the underside of a horse chestnut leaf (Aesculus hippocastanum) Numerous hairs (trichomes) cover the surface
    Business people using digital tablet on sofa — Stock Photo
    Business people using digital tablet on sofa
    Business people meeting in cafe using digital tablet — Stock Photo
    Business people meeting in cafe using digital tablet
    Student in wheelchair studying furnace electronic control system in HVAC classroom — Stock Photo
    Student in wheelchair studying furnace electronic control system in HVAC classroom
    Coloured scanning electron micrograph (SEM) Chicken eggshell surface (Gallus gallus domesticus). — Stock Photo
    Coloured scanning electron micrograph (SEM) Chicken eggshell surface (Gallus gallus domesticus).