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    Coloured scanning electron micrograph of 293T cell in early stage of programmed apoptosis cell death. — Stock Photo
    Coloured scanning electron micrograph of 293T cell in early stage of programmed apoptosis cell death.
    Zebrafish young. Coloured scanning electron micrograph (SEM) of newly-hatched zebrafish (Danio rerio) young or fry. These fish are used to study embryonic development. The eyes (blue) are seen in the heads. Zebrafish eggs are transparent — Stock Photo
    Zebrafish young. Coloured scanning electron micrograph (SEM) of newly-hatched zebrafish (Danio rerio) young or fry. These fish are used to study embryonic development. The eyes (blue) are seen in the heads. Zebrafish eggs are transparent
    Coloured scanning electron micrograph of Phasmarhabditis hermaphrodita microscopic nematode parasite of Rhabditidae. — Stock Photo
    Coloured scanning electron micrograph of Phasmarhabditis hermaphrodita microscopic nematode parasite of Rhabditidae.
    Coloured scanning electron micrograph of breast cancer cells. — Stock Photo
    Coloured scanning electron micrograph of breast cancer cells.
    Heart capillary with red blood cell between muscle fibres, colored scanning electron micrograph. — Stock Photo
    Heart capillary with red blood cell between muscle fibres, colored scanning electron micrograph.
    Coloured scanning electron micrograph of breast cancer cells. — Stock Photo
    Coloured scanning electron micrograph of breast cancer cells.
    Sarcoptic mange mites eggs — Stock Photo
    Sarcoptic mange mites eggs
    Scanning electron micrograph of bacterial culture from sputum. — Stock Photo
    Scanning electron micrograph of bacterial culture from sputum.
    Tendon, coloured scanning electron micrograph showing bundles of collagen fibres. — Stock Photo
    Tendon, coloured scanning electron micrograph showing bundles of collagen fibres.
    Cultured cancer cells — Stock Photo
    Cultured cancer cells
    Cancer cell clinging to human colon tissue, conceptual illustration. — Stock Photo
    Cancer cell clinging to human colon tissue, conceptual illustration.
    Fat cell. Coloured scanning electron micrograph (SEM) of part of a fat-storing cell (adipocytes). Fat cells are one of the largest cell types in the human body, each cell being 100 to 120 microns in diameter — Stock Photo
    Fat cell. Coloured scanning electron micrograph (SEM) of part of a fat-storing cell (adipocytes). Fat cells are one of the largest cell types in the human body, each cell being 100 to 120 microns in diameter
    Poppy (Papaver orientalis), coloured X-ray — Stock Photo
    Poppy (Papaver orientalis), coloured X-ray
    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.
    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.
    Colored scanning electron micrograph of immature pig sperm from epididymis. — Stock Photo
    Colored scanning electron micrograph of immature pig sperm from epididymis.
    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)
    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.
    Human cell infected with Simian Immunodeficiency Virus from sooty mangabey, colored scanning electron micrograph. — Stock Photo
    Human cell infected with Simian Immunodeficiency Virus from sooty mangabey, colored scanning electron micrograph.
    Phase contrast light micrograph of Paramecium a ciliate protozoan. — Stock Photo
    Phase contrast light micrograph of Paramecium a ciliate protozoan.
    Pollen grains of a common daisy — Stock Photo
    Pollen grains of a common daisy
    Roquefort cheese and digital illustration of fungus Penicillium roqueforti. — Stock Photo
    Roquefort cheese and digital illustration of fungus Penicillium roqueforti.
    Morphology of Activated platelets — Stock Photo
    Morphology of Activated platelets
    Coloured scanning electron micrograph of dividing Schizosaccharomyces pombe yeast cells. — Stock Photo
    Coloured scanning electron micrograph of dividing Schizosaccharomyces pombe yeast cells.
    Person with hands on their head, headache, coloured X-ray. — Stock Photo
    Person with hands on their head, headache, coloured X-ray.
    Breast cancer screening — Stock Photo
    Breast cancer screening
    Allergenic pet dander on dog hair, colored scanning electron micrograph. — Stock Photo
    Allergenic pet dander on dog hair, colored scanning electron micrograph.
    Alveolar macrophage phagocytosis of E. coli — Stock Photo
    Alveolar macrophage phagocytosis of E. coli
    Milkwort pollen grain — Stock Photo
    Milkwort pollen grain
    Scanning electron micrograph of Brevibacteria on human feet causing odour. — Stock Photo
    Scanning electron micrograph of Brevibacteria on human feet causing odour.
    Colored computed tomography scan of section through brain of senior male patient with dementia. — Stock Photo
    Colored computed tomography scan of section through brain of senior male patient with dementia.
    Colored scanning electron micrograph of pollen grains from convolvulus flower. — Stock Photo
    Colored scanning electron micrograph of pollen grains from convolvulus flower.
    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
    Blue brain tumour on magnetic resonance imaging scan, illustration. — Stock Photo
    Blue brain tumour on magnetic resonance imaging scan, illustration.
    Coloured scanning electron micrograph of bacteria cultured from mobile phone surface. — Stock Photo
    Coloured scanning electron micrograph of bacteria cultured from mobile phone surface.
    Escherichia coli bacteria — Stock Photo
    Escherichia coli bacteria
    Skimmia sp. pollen grain — Stock Photo
    Skimmia sp. pollen grain
    Coloured frankincense. This aromatic resin is tapped from the Boswellia sacra tree. It is used in aromatherapy and is widely associated with religious ceremonies. — Stock Photo
    Coloured frankincense. This aromatic resin is tapped from the Boswellia sacra tree. It is used in aromatherapy and is widely associated with religious ceremonies.
    Seminiferous tubules and lending cells — Stock Photo
    Seminiferous tubules and lending cells
    Digital illustration of Lyme disease tick parasite. — Stock Photo
    Digital illustration of Lyme disease tick parasite.
    Immature dog sperm — Stock Photo
    Immature dog sperm
    Coloured scanning electron micrograph of ovarian cancer cells. — Stock Photo
    Coloured scanning electron micrograph of ovarian cancer cells.
    Fly larva head anatomy — Stock Photo
    Fly larva head anatomy
    Kidney glomeruli. Coloured scanning electron micrograph (SEM) of a resin cast of glomeruli capillaries and the larger blood vessels supplying them with blood — Stock Photo
    Kidney glomeruli. Coloured scanning electron micrograph (SEM) of a resin cast of glomeruli capillaries and the larger blood vessels supplying them with blood
    Skin cancer cell — Stock Photo
    Skin cancer cell
    Narrowed abdominal arteries, coloured angiogram - blood vessel X-ray . — Stock Photo
    Narrowed abdominal arteries, coloured angiogram - blood vessel X-ray .
    Peripheral nerve. Coloured transmission electron micrograph (TEM) of a section through a small peripheral nerve. Myelin( blue) is an insulating fatty layer that surrounds the myelinated nerve fibres (pink) — Stock Photo
    Peripheral nerve. Coloured transmission electron micrograph (TEM) of a section through a small peripheral nerve. Myelin( blue) is an insulating fatty layer that surrounds the myelinated nerve fibres (pink)
    Coloured scanning electron micrograph of the rod-shaped, Gram-negative bacteria Escherichia coli, commonly known as E. coli — Stock Photo
    Coloured scanning electron micrograph of the rod-shaped, Gram-negative bacteria Escherichia coli, commonly known as E. coli
    Human lip. Coloured scanning electron micrograph (SEM) of a human lip, showing sweat gland openings on the drier external lip surface. These openings (pores) release sweat onto the surface of the skin — Stock Photo
    Human lip. Coloured scanning electron micrograph (SEM) of a human lip, showing sweat gland openings on the drier external lip surface. These openings (pores) release sweat onto the surface of the skin
    Human silhouette with Pneumocystis pneumonia and close-up of fungus spores. — Stock Photo
    Human silhouette with Pneumocystis pneumonia and close-up of fungus spores.
    Fungal cells showing sporangium — Stock Photo
    Fungal cells showing sporangium
    Grasses, coloured X-ray, radiology scan — Stock Photo
    Grasses, coloured X-ray, radiology scan
    Healthy human brain — Stock Photo
    Healthy human brain
    Heart pacemaker, X-ray — Stock Photo
    Heart pacemaker, X-ray
    Crystalline lens of the eye — Stock Photo
    Crystalline lens of the eye
    Tendon, coloured scanning electron micrograph showing bundles of collagen fibres. — Stock Photo
    Tendon, coloured scanning electron micrograph showing bundles of collagen fibres.
    Lining of the small intestine — Stock Photo
    Lining of the small intestine
    Composite image of nasal epithelium and pollen. Coloured Scanning Electron Micrograph (SEM) of the surface of nasal epithelium with inhaled in pollen. — Stock Photo
    Composite image of nasal epithelium and pollen. Coloured Scanning Electron Micrograph (SEM) of the surface of nasal epithelium with inhaled in pollen.
    Red blood cells with fibrin — Stock Photo
    Red blood cells with fibrin
    Crypts of Lieberkuhn. Light micrograph (LM). Crypts of Lieberkuhn of the colon shown in cross section. Crypts are long blind-ending tube-like extensions of the surface epithelial lining of the gut — Stock Photo
    Crypts of Lieberkuhn. Light micrograph (LM). Crypts of Lieberkuhn of the colon shown in cross section. Crypts are long blind-ending tube-like extensions of the surface epithelial lining of the gut