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    Scanning electron micrograph of dermestid beetle head. — Stock Photo
    Scanning electron micrograph of dermestid beetle head.
    Colored scanning electron micrograph of pollen grain cell from hollyhock hibiscus flower. — Stock Photo
    Colored scanning electron micrograph of pollen grain cell from hollyhock hibiscus flower.
    Heart strings strings — Stock Photo
    Heart strings strings
    Ruptured venule running through fatty tissue — Stock Photo
    Ruptured venule running through fatty tissue
    Colored scanning electron micrograph of pollen grains from convolvulus flower. — Stock Photo
    Colored scanning electron micrograph of pollen grains from convolvulus flower.
    Cultured cancer cells — Stock Photo
    Cultured cancer cells
    Colored scanning electron micrograph of Liposcelis divinatorius booklouse. — Stock Photo
    Colored scanning electron micrograph of Liposcelis divinatorius booklouse.
    Pollen grains of a common daisy — Stock Photo
    Pollen grains of a common daisy
    Scanning electron microscopy of DNA molecules and red and white blood cells. — Stock Photo
    Scanning electron microscopy of DNA molecules and red and white blood cells.
    Gall bladder. Coloured scanning electron micrograph (SEM) of the surface of a gall bladder. This mucosa lining is made up of cuboidal epithelial cells (green) — 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 (green)
    Cat flea head — Stock Photo
    Cat flea head
    Embryonic stem cells — Stock Photo
    Embryonic stem cells
    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
    Gastrotrich eggs. Coloured scanning electron micrograph (SEM) of a Chaetonotus sp. gastrotrich eggs. Gastrotrichs are microscopic, worm-like animals found in both freshwater and marine habitats — Stock Photo
    Gastrotrich eggs. Coloured scanning electron micrograph (SEM) of a Chaetonotus sp. gastrotrich eggs. Gastrotrichs are microscopic, worm-like animals found in both freshwater and marine habitats
    B-lymphocyte white blood cells — Stock Photo
    B-lymphocyte white blood cells
    Gastrotrich eggs. Coloured scanning electron micrograph (SEM) of a Chaetonotus sp. gastrotrich eggs. Gastrotrichs are microscopic, worm-like animals found in both freshwater and marine habitats — Stock Photo
    Gastrotrich eggs. Coloured scanning electron micrograph (SEM) of a Chaetonotus sp. gastrotrich eggs. Gastrotrichs are microscopic, worm-like animals found in both freshwater and marine habitats
    Dense connective tissue, coloured scanning electron micrograph (SEM). — Stock Photo
    Dense connective tissue, coloured scanning electron micrograph (SEM).
    Plankton. Coloured scanning electron micrograph (SEM) of plankton containing mainly Ceratium dinoflagellates. A few diatoms are also present. Dinoflagellates are unicellular protozoans — Stock Photo
    Plankton. Coloured scanning electron micrograph (SEM) of plankton containing mainly Ceratium dinoflagellates. A few diatoms are also present. Dinoflagellates are unicellular protozoans
    Collagen bundles from the delicate connective tissue — Stock Photo
    Collagen bundles from the delicate connective tissue
    Fracture through the thyroid gland — Stock Photo
    Fracture through the thyroid gland
    Snake red blood cells. Coloured scanning electron micrograph (SEM) of whole and fractured red blood cells (erythrocytes, red) in a small blood vessel of a snake — Stock Photo
    Snake red blood cells. Coloured scanning electron micrograph (SEM) of whole and fractured red blood cells (erythrocytes, red) in a small blood vessel of a snake
    Staphylococcus bacteria cluster — Stock Photo
    Staphylococcus bacteria cluster
    T lymphocyte cells attached to cancer cell — Stock Photo
    T lymphocyte cells attached to cancer cell
    Sporangium fungal cell with spores — Stock Photo
    Sporangium fungal cell with spores
    Myelinated nerve fibres — Stock Photo
    Myelinated nerve fibres
    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.
    Stomach lining. Coloured scanning electron micrograph (SEM) of the glandular lining (mucosa) of the stomach. The gastric mucosa secretes the digestive enzymes and hydrochloric acid — Stock Photo
    Stomach lining. Coloured scanning electron micrograph (SEM) of the glandular lining (mucosa) of the stomach. The gastric mucosa secretes the digestive enzymes and hydrochloric acid
    Sporangium fungal cell with spores — Stock Photo
    Sporangium fungal cell with spores
    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.
    Climbing lily pollen — Stock Photo
    Climbing lily pollen
    Fungal cells and sporangia — Stock Photo
    Fungal cells and sporangia
    Mycobacterium smegmatis bacteria — Stock Photo
    Mycobacterium smegmatis bacteria
    Nanostructures formed on nickel surface — Stock Photo
    Nanostructures formed on nickel surface
    Lymphoma cancer cell — Stock Photo
    Lymphoma cancer cell
    Plaque-forming bacteria, colored scanning electron micrograph. — Stock Photo
    Plaque-forming bacteria, colored scanning electron micrograph.
    Pollen grains from a bellflower — Stock Photo
    Pollen grains from a bellflower
    Colored scanning electron micrograph of scales from silverfish insect living fossil. — Stock Photo
    Colored scanning electron micrograph of scales from silverfish insect living fossil.
    Skeletal muscle fibres — Stock Photo
    Skeletal muscle fibres
    Male sex cell — Stock Photo
    Male sex cell
    Abutilon sp. pollen grain — Stock Photo
    Abutilon sp. pollen grain
    Immature dog sperm — Stock Photo
    Immature dog sperm
    Rapeseed pollen grain — Stock Photo
    Rapeseed pollen grain
    Escherichia coli bacteria — Stock Photo
    Escherichia coli bacteria
    Colored scanning electron micrograph of starch grains in seed of legume. — Stock Photo
    Colored scanning electron micrograph of starch grains in seed of legume.
    Colored scanning electron micrograph showing urethral epithelium of urethra. — Stock Photo
    Colored scanning electron micrograph showing urethral epithelium of urethra.
    Cannabis plant. Coloured scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant. The pointed hairs are called lithocyst cells. They contain cystoliths (calcium carbonate crystals) — Stock Photo
    Cannabis plant. Coloured scanning electron micrograph (SEM) of the surface of a cannabis (Cannabis sativa) plant. The pointed hairs are called lithocyst cells. They contain cystoliths (calcium carbonate crystals)
    Gastrotrich eggs. Coloured scanning electron micrograph (SEM) of a Chaetonotus sp. gastrotrich eggs. Gastrotrichs are microscopic, worm-like animals found in both freshwater and marine habitats — Stock Photo
    Gastrotrich eggs. Coloured scanning electron micrograph (SEM) of a Chaetonotus sp. gastrotrich eggs. Gastrotrichs are microscopic, worm-like animals found in both freshwater and marine habitats
    Colored scanning electron micrograph of variety of yeast species growing in larval tunnel of codling moth Cydia pomonella in mature apple. — Stock Photo
    Colored scanning electron micrograph of variety of yeast species growing in larval tunnel of codling moth Cydia pomonella in mature apple.
    Strawberry pollen grain — Stock Photo
    Strawberry pollen grain
    Didinium sp. ciliate protozoa, coloured scanning electron micrograph (SEM). These tiny single-celled organisms are found in freshwater and marine habitats. They are predatory organism, feeding on other ciliate protozoans, mainly Paramecium — Stock Photo
    Didinium sp. ciliate protozoa, coloured scanning electron micrograph (SEM). These tiny single-celled organisms are found in freshwater and marine habitats. They are predatory organism, feeding on other ciliate protozoans, mainly Paramecium
    Chinese hibiscus pollen — Stock Photo
    Chinese hibiscus pollen
    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
    Od shaped bacteria Tragelaphus — Stock Photo
    Od shaped bacteria Tragelaphus
    Osteoporotic bone abnormality — Stock Photo
    Osteoporotic bone abnormality
    Plaque-forming bacteria, colored scanning electron micrograph. — Stock Photo
    Plaque-forming bacteria, colored scanning electron micrograph.
    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
    Didinium sp. ciliate protozoa, coloured scanning electron micrograph (SEM). These tiny single-celled organisms are found in freshwater and marine habitats — Stock Photo
    Didinium sp. ciliate protozoa, coloured scanning electron micrograph (SEM). These tiny single-celled organisms are found in freshwater and marine habitats
    Red blood cells with fibrin — Stock Photo
    Red blood cells with fibrin
    Red blood cells — Stock Photo
    Red blood cells
    Stick insect foot — Stock Photo
    Stick insect foot