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    Hair follicles. Coloured scanning electron micrograph (SEM). The outer layer of hair (the cuticle) has overlapping scales of keratin. These scales are thought to prevent hairs from matting together — Stock Photo
    Hair follicles. Coloured scanning electron micrograph (SEM). The outer layer of hair (the cuticle) has overlapping scales of keratin. These scales are thought to prevent hairs from matting together
    Healthy lungs of a 30 year old patient — Stock Photo
    Healthy lungs of a 30 year old patient
    Gypsophila bouquet, X-ray. — Stock Photo
    Gypsophila bouquet, X-ray.
    Eyelash follicle, coloured scanning electron micrograph (SEM). — Stock Photo
    Eyelash follicle, coloured scanning electron micrograph (SEM).
    Scanning electron micrograph of bacterial culture from sputum. — Stock Photo
    Scanning electron micrograph of bacterial culture from sputum.
    Scorpion fly foot — Stock Photo
    Scorpion fly foot
    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.
    Cancellous Bone tissue — Stock Photo
    Cancellous Bone tissue
    From above pregnant female inspecting sonogram picture while lying on bed in ward of modern fertility clinic — Stock Photo
    From above pregnant female inspecting sonogram picture while lying on bed in ward of modern fertility clinic
    Woman in mask and doctor uniform making scan of teeth of little boy while working in dentist clinic — Stock Photo
    Woman in mask and doctor uniform making scan of teeth of little boy while working in dentist clinic
    Campylobacter jejuni bacteria — Stock Photo
    Campylobacter jejuni bacteria
    Coloured scanning electron micrograph (SEM) of uric acid crystals. — Stock Photo
    Coloured scanning electron micrograph (SEM) of uric acid crystals.
    Red blood cells and platelets — Stock Photo
    Red blood cells and platelets
    Fungal cells with sporangia and spores — Stock Photo
    Fungal cells with sporangia and spores
    Coloured scanning electron micrograph (SEM) of the shell (test) of a Globigerina sp. planktonic foraminiferan. — Stock Photo
    Coloured scanning electron micrograph (SEM) of the shell (test) of a Globigerina sp. planktonic foraminiferan.
    Doctor doing ultrasound for patient at hospital — Stock Photo
    Doctor doing ultrasound for patient at hospital
    Fungal cells and sporangia — Stock Photo
    Fungal cells and sporangia
    Modern vision test equipment and chair against white wall in optician office in clinic — Stock Photo
    Modern vision test equipment and chair against white wall in optician office in clinic
    Three dinoflagellates (blue), coloured scanning electron micrograph (SEM). Dinoflagellates are unicellular protozoans. — Stock Photo
    Three dinoflagellates (blue), coloured scanning electron micrograph (SEM). Dinoflagellates are unicellular protozoans.
    Healthy kidney, medical ultrasound scan. — Stock Photo
    Healthy kidney, medical ultrasound scan.
    View of Pituitary tumor — Stock Photo
    View of Pituitary tumor
    Allergenic pet dander on dog hair, colored scanning electron micrograph. — Stock Photo
    Allergenic pet dander on dog hair, colored scanning electron micrograph.
    Fossilised fragment of a coccolithotrope skeleton — Stock Photo
    Fossilised fragment of a coccolithotrope skeleton
    Weightlifter skeleton bench press, X-ray. — Stock Photo
    Weightlifter skeleton bench press, X-ray.
    Shell, X-ray, radiology scan — Stock Photo
    Shell, X-ray, radiology scan
    Immature dog sperm — Stock Photo
    Immature dog sperm
    Freshwater sponge (Spongilla sp.), coloured scanning electron micrograph (SEM). — Stock Photo
    Freshwater sponge (Spongilla sp.), coloured scanning electron micrograph (SEM).
    Piano accordion, X-ray, radiology scan — Stock Photo
    Piano accordion, X-ray, radiology scan
    Computer enhanced false-colour Magnetic Resonance Images (MRI) of two mid-sagittal and one axial (cross sectional) sections through the head of a normal 46 year-old woman, showing structures of the brain, spine and facial tissues. — Stock Photo
    Computer enhanced false-colour Magnetic Resonance Images (MRI) of two mid-sagittal and one axial (cross sectional) sections through the head of a normal 46 year-old woman, showing structures of the brain, spine and facial tissues.
    Colored digital illustration of parasitic dust mites. — Stock Photo
    Colored digital illustration of parasitic dust mites.
    From above cheerful female patient smiling and taking picture of ultrasound scan while sitting in ward of fertility clinic — Stock Photo
    From above cheerful female patient smiling and taking picture of ultrasound scan while sitting in ward of fertility clinic
    Person dancing with glow stick, X-ray. — Stock Photo
    Person dancing with glow stick, X-ray.
    Heart scan, conceptual illustration — Stock Photo
    Heart scan, conceptual illustration
    Resting T lymphocytes. Coloured scanning electron micrograph (SEM) of resting T lymphocytes from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system — Stock Photo
    Resting T lymphocytes. Coloured scanning electron micrograph (SEM) of resting T lymphocytes from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system
    Colored computed tomography scan of brain section of senior female patient with glioblastoma brain cancer. — Stock Photo
    Colored computed tomography scan of brain section of senior female patient with glioblastoma brain cancer.
    Mycobacterium chelonae bacteria — Stock Photo
    Mycobacterium chelonae bacteria
    Coloured scanning electron micrograph of human cancellous spongy bone tissue. — Stock Photo
    Coloured scanning electron micrograph of human cancellous spongy bone tissue.
    Airport security officer standing with metal detector to check a commuter in airport — Stock Photo
    Airport security officer standing with metal detector to check a commuter in airport
    Clock springs, X-ray. — Stock Photo
    Clock springs, X-ray.
    Coloured scanning electron micrograph of human red blood cells, white blood cells and platelets. — Stock Photo
    Coloured scanning electron micrograph of human red blood cells, white blood cells and platelets.
    Close-up shot of doctor examining belly of pregnant woman with ultrasound — Stock Photo
    Close-up shot of doctor examining belly of pregnant woman with ultrasound
    Human torso, MRI scan — Stock Photo
    Human torso, MRI scan
    Coloured scanning electron micrograph of activated platelets attached to surgical gauze. — Stock Photo
    Coloured scanning electron micrograph of activated platelets attached to surgical gauze.
    Human leg and stiletto shoe, X-ray. — Stock Photo
    Human leg and stiletto shoe, X-ray.
    Tree fern (Dicksonia sp.), X-ray. — Stock Photo
    Tree fern (Dicksonia sp.), X-ray.
    Coloured scanning electron micrograph (SEM) of a squamous cell on the surface of the skin. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a squamous cell on the surface of the skin.
    Orange blossom flowers, X-ray. — Stock Photo
    Orange blossom flowers, X-ray.
    Human sperm cell, coloured scanning electron micrograph (SEM). — Stock Photo
    Human sperm cell, coloured scanning electron micrograph (SEM).
    Healthy lungs of a 30 year old patient — Stock Photo
    Healthy lungs of a 30 year old patient
    Male doctor preparing patient for MRI scan in hospital — Stock Photo
    Male doctor preparing patient for MRI scan in hospital
    Skin cancer cell — Stock Photo
    Skin cancer cell
    Woman undergoing scan examination in skin clinic. — Stock Photo
    Woman undergoing scan examination in skin clinic.
    Back view of woman during medical diagnosis of breast in modern clinic — Stock Photo
    Back view of woman during medical diagnosis of breast in modern clinic
    Doctor looking at brain mri scan on digital tablet and patient entering mri scanning machine at hospital — Stock Photo
    Doctor looking at brain mri scan on digital tablet and patient entering mri scanning machine at hospital
    Dividing prostate gland cancer cells, colored scanning electron micrograph. — Stock Photo
    Dividing prostate gland cancer cells, colored scanning electron micrograph.
    Skin cancer cell — Stock Photo
    Skin cancer cell
    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.
    Scorpion fly foot — Stock Photo
    Scorpion fly foot
    Brass saxophone, X-ray. — Stock Photo
    Brass saxophone, X-ray.