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    Hair shafts growing from human skin — Stock Photo
    Hair shafts growing from human skin
    Enterococcus coccoid bacteria, colored scanning electron micrograph. — Stock Photo
    Enterococcus coccoid bacteria, colored scanning electron micrograph.
    Coloured scanning electron micrograph of Staphylococcus aureus bacteria. — Stock Photo
    Coloured scanning electron micrograph of Staphylococcus aureus bacteria.
    Motor neurons, light micrograph. Motor neurons of the spinal cord are part of the central nervous system. Haematoxylin and eosin stain. — Stock Photo
    Motor neurons, light micrograph. Motor neurons of the spinal cord are part of the central nervous system. Haematoxylin and eosin stain.
    Human lung tissue, light micrograph. Lungs are the primary organs of the respiratory system in humans and many other animals. Haematoxylin and eosin stain. — Stock Photo
    Human lung tissue, light micrograph. Lungs are the primary organs of the respiratory system in humans and many other animals. Haematoxylin and eosin stain.
    Colorectal cancer cell dividing — Stock Photo
    Colorectal cancer cell dividing
    Simple columnar epithelium, light micrograph — Stock Photo
    Simple columnar epithelium, light micrograph
    Pollen grains from a bellflower — Stock Photo
    Pollen grains from a bellflower
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    Light micrograph of a section through skin with a neurofibroma tumour (pink, across bottom). — Stock Photo
    Light micrograph of a section through skin with a neurofibroma tumour (pink, across bottom).
    Coloured scanning electron micrograph (SEM) of an anther (male reproductive part) from a bay tree (Laurus nobilis) flower. — Stock Photo
    Coloured scanning electron micrograph (SEM) of an anther (male reproductive part) from a bay tree (Laurus nobilis) flower.
    Coloured scanning electron micrograph of bacteria cultured from mobile phone surface. — Stock Photo
    Coloured scanning electron micrograph of bacteria cultured from mobile phone surface.
    Light micrograph of liver fluke eggs in a fish scale. — Stock Photo
    Light micrograph of liver fluke eggs in a fish scale.
    Methicillin-resistant Staphylococcus aureus — Stock Photo
    Methicillin-resistant Staphylococcus aureus
    Colored scanning electron micrograph image of tooth dentine, mineralised connective tissue found under tooth enamel. — Stock Photo
    Colored scanning electron micrograph image of tooth dentine, mineralised connective tissue found under tooth enamel.
    Cashmere wool fibres, coloured scanning electron micrograph (SEM). — Stock Photo
    Cashmere wool fibres, coloured scanning electron micrograph (SEM).
    Coloured scanning electron micrograph of bacteria cultured from used dishcloth. — Stock Photo
    Coloured scanning electron micrograph of bacteria cultured from used dishcloth.
    Colored scanning electron micrograph of immature pig sperm from epididymis. — Stock Photo
    Colored scanning electron micrograph of immature pig sperm from epididymis.
    Coloured scanning electron micrograph (SEM) view of the top surface of the organ of Corti in the cochlea of the inner ear. — Stock Photo
    Coloured scanning electron micrograph (SEM) view of the top surface of the organ of Corti in the cochlea of the inner ear.
    Coloured scanning electron micrograph of cancer cells from colon. — Stock Photo
    Coloured scanning electron micrograph of cancer cells from colon.
    Human smooth muscle, light micrograph. — Stock Photo
    Human smooth muscle, light micrograph.
    Duct lined with pseudostratified epithelium — Stock Photo
    Duct lined with pseudostratified epithelium
    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.
    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
    Light micrograph (bottom left) and computer illustration (top right) of the lining of the stomach, known as the mucosa. — Stock Photo
    Light micrograph (bottom left) and computer illustration (top right) of the lining of the stomach, known as the mucosa.
    Villi from the lining of the jejunum — Stock Photo
    Villi from the lining of the jejunum
    Plant vascular tissue, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Plant vascular tissue, light micrograph. Haematoxylin and eosin stain.
    Digital illustration of nerve neurons cells. — Stock Photo
    Digital illustration of nerve neurons cells.
    Illustration of human kidney and light micrograph of section with glomerulus. — Stock Photo
    Illustration of human kidney and light micrograph of section with glomerulus.
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Fungal cells with sporangia and spores — Stock Photo
    Fungal cells with sporangia and spores
    Smooth hawksbeard (Crepis capillaris) seed, coloured scanning electron micrograph (SEM). — Stock Photo
    Smooth hawksbeard (Crepis capillaris) seed, coloured scanning electron micrograph (SEM).
    Coloured scanning electron micrograph (SEM) of a section through a vein in the liver, which is filled with red blood cells (erythrocytes, red). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through a vein in the liver, which is filled with red blood cells (erythrocytes, red).
    Tendon fibroblast, light micrograph. Haematoxylin and eosin stain. — Stock Photo
    Tendon fibroblast, light micrograph. Haematoxylin and eosin stain.
    Ovarian cancer cells, coloured scanning electron micrograph. — Stock Photo
    Ovarian cancer cells, coloured scanning electron micrograph.
    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.
    Onion cells undergoing mitosis — Stock Photo
    Onion cells undergoing mitosis
    Human lung tissue, light micrograph. Lungs are the primary organs of the respiratory system in humans and many other animals. Haematoxylin and eosin stain. — Stock Photo
    Human lung tissue, light micrograph. Lungs are the primary organs of the respiratory system in humans and many other animals. Haematoxylin and eosin stain.
    Colored scanning electron micrograph of activated T lymphocyte from human blood sample. — Stock Photo
    Colored scanning electron micrograph of activated T lymphocyte from human blood sample.
    Paramecium ciliate protozoan — Stock Photo
    Paramecium ciliate protozoan
    Entamoeba gingivalis parasitic pathogen single-celled protozoans, amoebas in oral cavity, digital illustration. — Stock Photo
    Entamoeba gingivalis parasitic pathogen single-celled protozoans, amoebas in oral cavity, digital illustration.
    Asbestos fibres in lung tissue, light micrograph. — Stock Photo
    Asbestos fibres in lung tissue, light micrograph.
    Wasp eye numerous lenses — Stock Photo
    Wasp eye numerous lenses
    Coloured scanning electron micrograph of cancer cells migrating down pores. — Stock Photo
    Coloured scanning electron micrograph of cancer cells migrating down pores.
    Freshwater single diatom — Stock Photo
    Freshwater single diatom
    Ductal carcinoma of the breast — Stock Photo
    Ductal carcinoma of the breast
    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
    Clothes moth wing scales — Stock Photo
    Clothes moth wing scales
    Ovary. Light micrograph (LM) of section through whole ovary. Cortex (outer region) contains numerous corpora lutea (pink) and follicles (purple) at various stages of development — Stock Photo
    Ovary. Light micrograph (LM) of section through whole ovary. Cortex (outer region) contains numerous corpora lutea (pink) and follicles (purple) at various stages of development
    Coloured scanning electron micrograph of cultured cancer cell from human cervix showing numerous microvilli. — Stock Photo
    Coloured scanning electron micrograph of cultured cancer cell from human cervix showing numerous microvilli.
    Fractured pancreas tissue — Stock Photo
    Fractured pancreas tissue
    Campylobacter jejuni bacteria — Stock Photo
    Campylobacter jejuni bacteria
    Scientists looking at scanning electron micrographs of different nanofibre structures. — Stock Photo
    Scientists looking at scanning electron micrographs of different nanofibre structures.
    Colored scanning electron micrograph of immature pig sperm from epididymis. — Stock Photo
    Colored scanning electron micrograph of immature pig sperm from epididymis.
    Chronic pyelonephritis, computer illustration and light micrograph — Stock Photo
    Chronic pyelonephritis, computer illustration and light micrograph
    Photosynthetic Navicula sp. diatom — Stock Photo
    Photosynthetic Navicula sp. diatom
    Pollen grains of a common daisy — Stock Photo
    Pollen grains of a common daisy
    Male mosquito head — Stock Photo
    Male mosquito head
    Longitudinal section of a human sciatic l nerve — Stock Photo
    Longitudinal section of a human sciatic l nerve
    Human compact bone tissue, light micrograph. — Stock Photo
    Human compact bone tissue, light micrograph.