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    Bifidobacterium bacteria, computer illustration. Bifidobacteria are Gram-positive anaerobic bacteria that live in gastrointestinal tract, vagina and mouth — Stock Photo
    Bifidobacterium bacteria, computer illustration. Bifidobacteria are Gram-positive anaerobic bacteria that live in gastrointestinal tract, vagina and mouth
    Male scientists experimenting together in laboratory — Stock Photo
    Male scientists experimenting together in laboratory
    Male scientist using microscope in laboratory — Stock Photo
    Male scientist using microscope in laboratory
    Immature dog sperm — Stock Photo
    Immature dog sperm
    Marjoram (Origanum vilgare) leaf surface, coloured scanning electron micrograph (SEM). — Stock Photo
    Marjoram (Origanum vilgare) leaf surface, coloured scanning electron micrograph (SEM).
    Magnified digital illustration of eosinophil cell. — Stock Photo
    Magnified digital illustration of eosinophil cell.
    Fly head anatomy — Stock Photo
    Fly head anatomy
    Stomach lining. Coloured light micrograph (LM) of the stomach. The lumen is at top (white). The surface of the mucosa consists of simple columnar cells that secrete mucus — Stock Photo
    Stomach lining. Coloured light micrograph (LM) of the stomach. The lumen is at top (white). The surface of the mucosa consists of simple columnar cells that secrete mucus
    Microbiologist taking bacterial sample on microscope slide. — Stock Photo
    Microbiologist taking bacterial sample on microscope slide.
    Climbing lily pollen — Stock Photo
    Climbing lily pollen
    Scientist hand holding blood drop sample on microscope slide, studio shot. — Stock Photo
    Scientist hand holding blood drop sample on microscope slide, studio shot.
    Cells of brewer yeast — Stock Photo
    Cells of brewer yeast
    Nipah virus particles, computer illustration. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore in people who had close contact with pigs — Stock Photo
    Nipah virus particles, computer illustration. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore in people who had close contact with pigs
    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
    Hands of scientist researching sample on microscope slide under light microscope. — Stock Photo
    Hands of scientist researching sample on microscope slide under light microscope.
    Fungal cells showing sporangium — Stock Photo
    Fungal cells showing sporangium
    Passion flower pollen — Stock Photo
    Passion flower pollen
    Female doctor examining a microscope in a hospital. — Stock Photo
    Female doctor examining a microscope in a hospital.
    Micrograph of tendon fibres — Stock Photo
    Micrograph of tendon fibres
    Focused adult female doctor in sterile mask and ornamental medical cap looking through surgical microscope against crop coworker in hospital — Stock Photo
    Focused adult female doctor in sterile mask and ornamental medical cap looking through surgical microscope against crop coworker in hospital
    Cultured cancer cells — Stock Photo
    Cultured cancer cells
    Magnified digital illustration of water bear. — Stock Photo
    Magnified digital illustration of water bear.
    College students conducting scientific experiment at microscope in science laboratory classroom — Stock Photo
    College students conducting scientific experiment at microscope in science laboratory classroom
    Illustration of Nipah viruses binding to receptors on human cells, an initial stage of Nipah infection. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore — Stock Photo
    Illustration of Nipah viruses binding to receptors on human cells, an initial stage of Nipah infection. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore
    Laboratory female technician with scientific micropipette. — Stock Photo
    Laboratory female technician with scientific micropipette.
    Combined video measuring system and ergonomic measuring microscope for devices in modern industrial facility. — Stock Photo
    Combined video measuring system and ergonomic measuring microscope for devices in modern industrial facility.
    Young female scientist doing test in laboratory, male scientist standing in background in laboratory. — Stock Photo
    Young female scientist doing test in laboratory, male scientist standing in background in laboratory.
    Mucosa of the trachea — Stock Photo
    Mucosa of the trachea
    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
    Close-up of hands of scientist placing slide with human sample under light microscope for medical testing. — Stock Photo
    Close-up of hands of scientist placing slide with human sample under light microscope for medical testing.
    Close-up of light microscope stage and lenses. — Stock Photo
    Close-up of light microscope stage and lenses.
    Light micrograph of a section through the liver of a patient with glycogenosis, or glycogen storage disease (GSD). GSD is a rare condition that changes the way the body uses and stores glycogen, a form of sugar or glucose. Haematoxylin and eosin stai — Stock Photo
    Light micrograph of a section through the liver of a patient with glycogenosis, or glycogen storage disease (GSD). GSD is a rare condition that changes the way the body uses and stores glycogen, a form of sugar or glucose. Haematoxylin and eosin stai
    Myelinated nerve fibres — Stock Photo
    Myelinated nerve fibres
    Embryonic stem cells — Stock Photo
    Embryonic stem cells
    Chinese hibiscus pollen — Stock Photo
    Chinese hibiscus pollen
    Side view focused male expert in lab coat gloves and face mask examining samples through powerful microscope lenses while working in modern equipped laboratory — Stock Photo
    Side view focused male expert in lab coat gloves and face mask examining samples through powerful microscope lenses while working in modern equipped laboratory
    Maize root. Light micrograph (LM) of section through root of maize plant (Zea mays) showing typical monocot arrangement of vascular bundles. central vascular cylinder is comprised of central cluster of parenchyma cells — Stock Photo
    Maize root. Light micrograph (LM) of section through root of maize plant (Zea mays) showing typical monocot arrangement of vascular bundles. central vascular cylinder is comprised of central cluster of parenchyma cells
    Adult female doctor in sterile mask and ornamental medical cap looking through surgical microscope against crop coworker in hospital — Stock Photo
    Adult female doctor in sterile mask and ornamental medical cap looking through surgical microscope against crop coworker in hospital
    Section through a grape stem — Stock Photo
    Section through a grape stem
    Close-up of light microscope lenses on white background. — Stock Photo
    Close-up of light microscope lenses on white background.
    College students using microscope conducting scientific experiment in laboratory — Stock Photo
    College students using microscope conducting scientific experiment in laboratory
    University student doing experiment on microscope in laboratory at college — Stock Photo
    University student doing experiment on microscope in laboratory at college
    Sporangium fungal cell with spores — Stock Photo
    Sporangium fungal cell with spores
    Developing pig eye — Stock Photo
    Developing pig eye
    Od shaped bacteria Tragelaphus — Stock Photo
    Od shaped bacteria Tragelaphus
    Pancreatic islet cells. Colored transmission electron micrograph (TEM) of a section through pancreas tissue, showing cells known as Islets of Langerhans. These cells occur in distinct ovoid clusters numbering about 1 million in humans — Stock Photo
    Pancreatic islet cells. Colored transmission electron micrograph (TEM) of a section through pancreas tissue, showing cells known as Islets of Langerhans. These cells occur in distinct ovoid clusters numbering about 1 million in humans
    Colored scanning electron micrograph of rod-shaped Gram-negative bacteria Escherichia coli, commonly known as E coli. — Stock Photo
    Colored scanning electron micrograph of rod-shaped Gram-negative bacteria Escherichia coli, commonly known as E coli.
    Acinar pancreatic cell — Stock Photo
    Acinar pancreatic cell
    Nipah virus in lungs, conceptual computer illustration. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore in people who had close contact with pigs — Stock Photo
    Nipah virus in lungs, conceptual computer illustration. Nipah virus is zoonotic (transmitted to humans from animals) and was first found in Malaysia and Singapore in people who had close contact with pigs
    Closeup of magnified part of black and brown ant with glossy head — Stock Photo
    Closeup of magnified part of black and brown ant with glossy head
    Fracture through the thyroid gland — Stock Photo
    Fracture through the thyroid gland
    Female scientist researching sample in petri dish under light microscope. — Stock Photo
    Female scientist researching sample in petri dish under light microscope.
    Gall bladder. Coloured scanning electron micrograph (SEM) of the surface of a gall bladder. This mucosa lining is made up of cuboidal epithelial cells (yellow) — Stock Photo
    Gall bladder. Coloured scanning electron micrograph (SEM) of the surface of a gall bladder. This mucosa lining is made up of cuboidal epithelial cells (yellow)
    Colored scanning electron micrograph of pollen grains from convolvulus flower. — Stock Photo
    Colored scanning electron micrograph of pollen grains from convolvulus flower.
    Sperm cell in a fallopian tube — Stock Photo
    Sperm cell in a fallopian tube
    Lung tissue, coloured transmission electron micrograph (TEM). of a pulmonary capillary containing two red blood cells (red) and three platelets (brown). A basement membrane (cyan) surround the endothelium separating it from the alveolar epithelium — Stock Photo
    Lung tissue, coloured transmission electron micrograph (TEM). of a pulmonary capillary containing two red blood cells (red) and three platelets (brown). A basement membrane (cyan) surround the endothelium separating it from the alveolar epithelium
    Female scientist viewing tissue sample under microscope. — Stock Photo
    Female scientist viewing tissue sample under microscope.
    Hair follicles structure — Stock Photo
    Hair follicles structure
    Scientists viewing sample on glass slide under light microscope. — Stock Photo
    Scientists viewing sample on glass slide under light microscope.
    Areolar connective tissue, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Areolar connective tissue, light micrograph. Haematoxylin and eosin stain.