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    Micrograph of house fly — Stock Photo
    Micrograph of house fly
    Man holding just caught yellowfin fish. panama — Stock Photo
    Man holding just caught yellowfin fish. panama
    Coloured scanning electron micrograph (SEM) of a section through a foetal olfactory (smelling) sense organ known as the vomeronasal organ (VNO), or Jacobson organ. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through a foetal olfactory (smelling) sense organ known as the vomeronasal organ (VNO), or Jacobson organ.
    Leech, coloured scanning electron micrograph (SEM). — Stock Photo
    Leech, coloured scanning electron micrograph (SEM).
    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.
    Colored scanning electron micrograph of rod-shaped Gram-negative bacteria Escherichia coli. — Stock Photo
    Colored scanning electron micrograph of rod-shaped Gram-negative bacteria Escherichia coli.
    Stick insect foot — Stock Photo
    Stick insect foot
    Dreamy young feminine gay with closed eyes and tattoo in stylish apparel touching face in sunlight — Stock Photo
    Dreamy young feminine gay with closed eyes and tattoo in stylish apparel touching face in sunlight
    Bacteria found in a sample of human faeces — Stock Photo
    Bacteria found in a sample of human faeces
    Coloured scanning electron micrograph of surface of prostate cancer cells. — Stock Photo
    Coloured scanning electron micrograph of surface of prostate cancer cells.
    Coloured scanning electron micrograph of fresh water centric diatoms frustules type of algae. — Stock Photo
    Coloured scanning electron micrograph of fresh water centric diatoms frustules type of algae.
    Blood clot structure — Stock Photo
    Blood clot structure
    House dust mite — Stock Photo
    House dust mite
    Wild mustard flower petal surface (Brassica kaber), coloured scanning electron micrograph (SEM). — Stock Photo
    Wild mustard flower petal surface (Brassica kaber), coloured scanning electron micrograph (SEM).
    Escherichia coli bacteria — Stock Photo
    Escherichia coli bacteria
    Coloured profile X-ray of fixation devices (white) in the bones of the knee, used to hold the anterior cruciate ligament (not seen) in place. — Stock Photo
    Coloured profile X-ray of fixation devices (white) in the bones of the knee, used to hold the anterior cruciate ligament (not seen) in place.
    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.
    Previously burnt sub-alpine forest rebounding in summer with lodge-pole pines and variety of wildflowers, yarrow, aster, arnica and corn lilies. — Stock Photo
    Previously burnt sub-alpine forest rebounding in summer with lodge-pole pines and variety of wildflowers, yarrow, aster, arnica and corn lilies.
    Blackberries and blueberries, coloured X-ray. — Stock Photo
    Blackberries and blueberries, coloured X-ray.
    Trachea (wind pipe) lining, coloured scanning electron micrograph (SEM). — Stock Photo
    Trachea (wind pipe) lining, coloured scanning electron micrograph (SEM).
    Colored X-ray of section through thoracic spine of senior male patient with ankylosing spondylitis with severe degeneration of lower thoracic spine. — Stock Photo
    Colored X-ray of section through thoracic spine of senior male patient with ankylosing spondylitis with severe degeneration of lower thoracic spine.
    Dentist showing denture model to patient in clinic — Stock Photo
    Dentist showing denture model to patient in clinic
    Breast cancer screening — Stock Photo
    Breast cancer screening
    Flowering currant pollen — Stock Photo
    Flowering currant pollen
    Staphylococcus bacteria cluster — Stock Photo
    Staphylococcus bacteria cluster
    Tendon, coloured scanning electron micrograph showing bundles of collagen fibres. — Stock Photo
    Tendon, coloured scanning electron micrograph showing bundles of collagen fibres.
    Neurone embedded in grey matter — Stock Photo
    Neurone embedded in grey matter
    Tumour affecting the pituitary gland — Stock Photo
    Tumour affecting the pituitary gland
    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.
    Acinar pancreatic cell — Stock Photo
    Acinar pancreatic cell
    Dental prosthesis in plastic bag, close-up. — Stock Photo
    Dental prosthesis in plastic bag, close-up.
    Phlox pollen grain — Stock Photo
    Phlox pollen grain
    Digital illustration of multiple threadworms in human intestine. — Stock Photo
    Digital illustration of multiple threadworms in human intestine.
    Staphylococcus aureus coccoid bacteria, colored scanning electron micrograph. — Stock Photo
    Staphylococcus aureus coccoid bacteria, colored scanning electron micrograph.
    Fungal cells and sporangia — Stock Photo
    Fungal cells and sporangia
    Normal elbow and wrist joints, X-ray — Stock Photo
    Normal elbow and wrist joints, X-ray
    Human hair shafts, digital illustration. — Stock Photo
    Human hair shafts, digital illustration.
    Black colleagues examining denture in laboratory — Stock Photo
    Black colleagues examining denture in laboratory
    Red blood cells — Stock Photo
    Red blood cells
    Phytoplankton diatom Coscinodiscus sp — Stock Photo
    Phytoplankton diatom Coscinodiscus sp
    Coloured computed tomography (CT) scan of a section through the chest of a 76-year-old male patient with a malignant (cancerous) tumour (bright, right) of the bronchus. — Stock Photo
    Coloured computed tomography (CT) scan of a section through the chest of a 76-year-old male patient with a malignant (cancerous) tumour (bright, right) of the bronchus.
    Nerve. Coloured scanning electron micrograph (SEM) of a freeze-fracture through a peripheral nerve. Schwann cells wraps their cell membrane around the nerve a number of times — Stock Photo
    Nerve. Coloured scanning electron micrograph (SEM) of a freeze-fracture through a peripheral nerve. Schwann cells wraps their cell membrane around the nerve a number of times
    Previously burnt sub-alpine forest rebounding in summer with lodge-pole pines and variety of wildflowers, yarrow, aster, arnica and corn lilies. — Stock Photo
    Previously burnt sub-alpine forest rebounding in summer with lodge-pole pines and variety of wildflowers, yarrow, aster, arnica and corn lilies.
    Stagnant water bacteria — Stock Photo
    Stagnant water bacteria
    Coloured scanning electron micrograph of 293T cell infected with human immunodeficiency virus. — Stock Photo
    Coloured scanning electron micrograph of 293T cell infected with human immunodeficiency virus.
    Normal lower legs anatomy, frontal X-ray. — Stock Photo
    Normal lower legs anatomy, frontal X-ray.
    Campylobacter jejuni bacteria with flagella, digital artwork. — Stock Photo
    Campylobacter jejuni bacteria with flagella, digital artwork.
    Researcher holding a petri dish — Stock Photo
    Researcher holding a petri dish
    Diatom eukaryotic algae — Stock Photo
    Diatom eukaryotic algae
    Coloured scanning electron micrograph of osteocyte bone cell surrounded by bone tissue. — Stock Photo
    Coloured scanning electron micrograph of osteocyte bone cell surrounded by bone tissue.
    False hellebore close-up view, black and white image — Stock Photo
    False hellebore close-up view, black and white image
    Skeletal muscle fibres — Stock Photo
    Skeletal muscle fibres
    Crenated red blood cells — Stock Photo
    Crenated red blood cells
    Lung tissue, coloured transmission electron micrograph (TEM). — Stock Photo
    Lung tissue, coloured transmission electron micrograph (TEM).
    Peripheral nerve. Coloured transmission electron micrograph (TEM) of a section through a small peripheral nerve. Myelin( brown) is an insulating fatty layer that surrounds the myelinated nerve fibres (blue) — Stock Photo
    Peripheral nerve. Coloured transmission electron micrograph (TEM) of a section through a small peripheral nerve. Myelin( brown) is an insulating fatty layer that surrounds the myelinated nerve fibres (blue)
    Venule. Coloured transmission electron micrograph (TEM). Venules are small veins that transport deoxygenated blood from the capillary beds to the veins. Endothelial cells line the entire circulatory system — Stock Photo
    Venule. Coloured transmission electron micrograph (TEM). Venules are small veins that transport deoxygenated blood from the capillary beds to the veins. Endothelial cells line the entire circulatory system
    Candida albicans infected medical catheter — Stock Photo
    Candida albicans infected medical catheter
    False clownfish swimming over anemone — Stock Photo
    False clownfish swimming over anemone
    Mixed oral bacteria — Stock Photo
    Mixed oral bacteria
    Colored scanning electron micrograph of rod-shaped, gram-negative bacteria Escherichia coli of human intestine. — Stock Photo
    Colored scanning electron micrograph of rod-shaped, gram-negative bacteria Escherichia coli of human intestine.