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    Coloured scanning electron micrograph (SEM) of a freeze-fractured water lily stem showing numerous vascular bundles (grey) and large intercellular air spaces (holes). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a freeze-fractured water lily stem showing numerous vascular bundles (grey) and large intercellular air spaces (holes).
    Infected human bronchus — Stock Photo
    Infected human bronchus
    Healthy and Infected bronchus — Stock Photo
    Healthy and Infected bronchus
    Human artery showing artery walls and bloodstream — Stock Photo
    Human artery showing artery walls and bloodstream
    Skin anatomy showing tissue stratification — Stock Photo
    Skin anatomy showing tissue stratification
    Cut tree trunks stacked outdoors, full frame. — Stock Photo
    Cut tree trunks stacked outdoors, full frame.
    Cross section of an espresso coffee maker, coffee and a cup — Stock Photo
    Cross section of an espresso coffee maker, coffee and a cup
    Close-up of sliced heirloom cherry tomatoes, full frame — Stock Photo
    Close-up of sliced heirloom cherry tomatoes, full frame
    Human eye anatomy — Stock Photo
    Human eye anatomy
    Small intestine wall — Stock Photo
    Small intestine wall
    Pathological anatomy of Ventral hernia — Stock Photo
    Pathological anatomy of Ventral hernia
    Close-up of a damselfly hiding behind a plant stem, Indonesia — Stock Photo
    Close-up of a damselfly hiding behind a plant stem, Indonesia
    Bees on two halved watermelons on a wooden table, Hungary — Stock Photo
    Bees on two halved watermelons on a wooden table, Hungary
    Cross section of human eye on white background — Stock Photo
    Cross section of human eye on white background
    Illustration of healthy bone structure on white background. — Stock Photo
    Illustration of healthy bone structure on white background.
    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.
    Healthy tooth anatomy — Stock Photo
    Healthy tooth anatomy
    View of Heart valves — Stock Photo
    View of Heart valves
    Elementary age girls sitting side by side in park and covering eyes with fruit slices. — Stock Photo
    Elementary age girls sitting side by side in park and covering eyes with fruit slices.
    Halved raw round red cabbage cut across middle. — Stock Photo
    Halved raw round red cabbage cut across middle.
    Illustration of human heart anatomy on white background. — Stock Photo
    Illustration of human heart anatomy on white background.
    Illustration of human spinal vertebra on white background. — Stock Photo
    Illustration of human spinal vertebra on white background.
    Magnified digital illustration of human cell cross-section. — Stock Photo
    Magnified digital illustration of human cell cross-section.
    Digital illustration of abnormal white blood cells B-lymphocytes while hairy cell leukaemia. — Stock Photo
    Digital illustration of abnormal white blood cells B-lymphocytes while hairy cell leukaemia.
    Human heart anatomy showing valves, cross section illustration. — Stock Photo
    Human heart anatomy showing valves, cross section illustration.
    Croissants with striped pattern on white background — Stock Photo
    Croissants with striped pattern on white background
    Healthy tooth anatomy — Stock Photo
    Healthy tooth anatomy
    Girl holding water melon. — Stock Photo
    Girl holding water melon.
    Brain with aneurysm in the middle cerebral artery — Stock Photo
    Brain with aneurysm in the middle cerebral artery
    Pink candies with jam and dripping glaze — Stock Photo
    Pink candies with jam and dripping glaze
    Nerve cell structure in cross section on white background, digital illustration. — Stock Photo
    Nerve cell structure in cross section on white background, digital illustration.
    Visual render of Human skin anatomy — Stock Photo
    Visual render of Human skin anatomy
    Illustration of human spinal vertebra on white background. — Stock Photo
    Illustration of human spinal vertebra on white background.
    Human skin anatomy and blood supply — Stock Photo
    Human skin anatomy and blood supply
    Stages of star life with labels — Stock Photo
    Stages of star life with labels
    Comparison of different sized kidney stones in the human kidney — Stock Photo
    Comparison of different sized kidney stones in the human kidney
    Half of starfruit on white background. — Stock Photo
    Half of starfruit on white background.
    Girl holding necklace with crucifix — Stock Photo
    Girl holding necklace with crucifix
    Fresh ripe cauliflower over black background — Stock Photo
    Fresh ripe cauliflower over black background
    Illustration of brain in cross section on white background. — Stock Photo
    Illustration of brain in cross section on white background.
    3d illustration of cross-section showing structure of Earth, from core to atmosphere. — Stock Photo
    3d illustration of cross-section showing structure of Earth, from core to atmosphere.
    Beetroot cut in half on white background. — Stock Photo
    Beetroot cut in half on white background.
    Cross-section of human brain — Stock Photo
    Cross-section of human brain
    Magnified digital illustration of human cell cross-section. — Stock Photo
    Magnified digital illustration of human cell cross-section.
    Human nerve structure in cross section, digital illustration. — Stock Photo
    Human nerve structure in cross section, digital illustration.
    Normal upper right femur bone — Stock Photo
    Normal upper right femur bone
    Low section of woman walking on zebra crossing at night — Stock Photo
    Low section of woman walking on zebra crossing at night
    Colon cancer, digital illustration and light micrograph showing colon adenocarcinoma. — Stock Photo
    Colon cancer, digital illustration and light micrograph showing colon adenocarcinoma.
    Human digestive system, computer illustration. — Stock Photo
    Human digestive system, computer illustration.
    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.
    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.
    Transparent view of human body with kidneys and intestines — Stock Photo
    Transparent view of human body with kidneys and intestines
    Microscopic cross section view of HIV virus — Stock Photo
    Microscopic cross section view of HIV virus
    View of Heart anatomy — Stock Photo
    View of Heart anatomy
    Half of butternut squash on white background. — Stock Photo
    Half of butternut squash on white background.
    Polished sectioned ammonite fossil on black background. — Stock Photo
    Polished sectioned ammonite fossil on black background.
    Male head with visible skull and brain on white background. — Stock Photo
    Male head with visible skull and brain on white background.
    3d illustration of cross-section of human eye with explanations and inscription. — Stock Photo
    3d illustration of cross-section of human eye with explanations and inscription.
    Anatomy of heart interior with labels — Stock Photo
    Anatomy of heart interior with labels
    Light micrograph of a cross section through a grape vine (Vitis sp.) stem. — Stock Photo
    Light micrograph of a cross section through a grape vine (Vitis sp.) stem.