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    Human alveoli anatomy — Stock Photo
    Human alveoli anatomy
    Bacteria amidst blood cells in blood vessel, digital illustration. — Stock Photo
    Bacteria amidst blood cells in blood vessel, digital illustration.
    Illustration of healthy heart in human body silhouette. — Stock Photo
    Illustration of healthy heart in human body silhouette.
    Digital illustration of human alveoli on white background. — Stock Photo
    Digital illustration of human alveoli on white background.
    Illustration of bypass in human heart. — Stock Photo
    Illustration of bypass in human heart.
    Close-up of frost on autumn leaves, Bulgaria — Stock Photo
    Close-up of frost on autumn leaves, Bulgaria
    Light micrograph of a section through tissue showing an artery (middle ) and a vein (top left). — Stock Photo
    Light micrograph of a section through tissue showing an artery (middle ) and a vein (top left).
    Illustration of silhouette of obese man with visible heart. — Stock Photo
    Illustration of silhouette of obese man with visible heart.
    3d illustration of blood knot in artery vessel. — Stock Photo
    3d illustration of blood knot in artery vessel.
    Illustration of heart and close-up of infection bacteria in male body silhouette on black background. — Stock Photo
    Illustration of heart and close-up of infection bacteria in male body silhouette on black background.
    Illustration of clot of human blood cells. — Stock Photo
    Illustration of clot of human blood cells.
    Macro detail of green cabbage — Stock Photo
    Macro detail of green cabbage
    Erythrocytes and leukocytes blood cells in human blood vessel, digital illustration. — Stock Photo
    Erythrocytes and leukocytes blood cells in human blood vessel, digital illustration.
    Close-up of yellow flageolet bean on white background. — Stock Photo
    Close-up of yellow flageolet bean on white background.
    Erythrocytes red blood cells in human blood vessel, digital illustration. — Stock Photo
    Erythrocytes red blood cells in human blood vessel, digital illustration.
    Close-up view of a ladybug on a dry leaf — Stock Photo
    Close-up view of a ladybug on a dry leaf
    Close Up Of A Taro Leaf; Maui, Hawaii, United States Of America — Stock Photo
    Close Up Of A Taro Leaf; Maui, Hawaii, United States Of America
    Diseased blood cells with bacteria, computer illustration. — Stock Photo
    Diseased blood cells with bacteria, computer illustration.
    Illustration of overweight woman with visible heart on black background. — Stock Photo
    Illustration of overweight woman with visible heart on black background.
    View of Mitral valve — Stock Photo
    View of Mitral valve
    Plants with peppers and wavy foliage on thin stalks growing in row in greenhouse — Stock Photo
    Plants with peppers and wavy foliage on thin stalks growing in row in greenhouse
    Medical illustration of blocked artery disorder. — Stock Photo
    Medical illustration of blocked artery disorder.
    Illustration of heart in male body silhouette on black background. — Stock Photo
    Illustration of heart in male body silhouette on black background.
    Illustration of senior man silhouette with visible heart. — Stock Photo
    Illustration of senior man silhouette with visible heart.
    Illustration of silhouette of obese man with visible heart. — Stock Photo
    Illustration of silhouette of obese man with visible heart.
    Diseased blood cells with bacteria, computer illustration. — Stock Photo
    Diseased blood cells with bacteria, computer illustration.
    Red blood cells and blood vessel — Stock Photo
    Red blood cells and blood vessel
    Green natural detail plant pattern — Stock Photo
    Green natural detail plant pattern
    Illustration of human blood cells on black background. — Stock Photo
    Illustration of human blood cells on black background.
    Internal organs, circulatory and nervous systems — Stock Photo
    Internal organs, circulatory and nervous systems
    Frontal illustration of blue silhouette of obese woman with highlighted heart on black background. — Stock Photo
    Frontal illustration of blue silhouette of obese woman with highlighted heart on black background.
    Medical nanorobot in human blood vessel, panoramic digital illustration. — Stock Photo
    Medical nanorobot in human blood vessel, panoramic digital illustration.
    Illustration of glass heart on black background. — Stock Photo
    Illustration of glass heart on black background.
    Closeup of bright yellow thin dry autumn leaf with veins for full frame abstract background — Stock Photo
    Closeup of bright yellow thin dry autumn leaf with veins for full frame abstract background
    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).
    Illustration of blue silhouette of obese woman with highlighted heart on black background. — Stock Photo
    Illustration of blue silhouette of obese woman with highlighted heart on black background.
    Illustration of healthy and fatty heart on white background. — Stock Photo
    Illustration of healthy and fatty heart on white background.
    Male anatomy with tissue and systems — Stock Photo
    Male anatomy with tissue and systems
    Illustration of red human blood cells on black background. — Stock Photo
    Illustration of red human blood cells on black background.
    3d rendered illustration of colored female heart in body silhouette. — Stock Photo
    3d rendered illustration of colored female heart in body silhouette.
    Superfood: Fresh Kale close-up view — Stock Photo
    Superfood: Fresh Kale close-up view
    Human vein showing tissue stratification — Stock Photo
    Human vein showing tissue stratification
    Human vein showing tissue stratification — Stock Photo
    Human vein showing tissue stratification
    Closeup texture of dark rough rock in sunlight — Stock Photo
    Closeup texture of dark rough rock in sunlight
    Illustration of two bypasses in human heart. — Stock Photo
    Illustration of two bypasses in human heart.
    Close-up of frost on an autumn leaf, Bulgaria — Stock Photo
    Close-up of frost on an autumn leaf, Bulgaria
    3d rendered illustration of human vascular system. — Stock Photo
    3d rendered illustration of human vascular system.
    Human skin anatomy — Stock Photo
    Human skin anatomy
    Man holding a heart, computer illustration. — Stock Photo
    Man holding a heart, computer illustration.
    Female donor with patch on hand sitting in medical chair after blood transfusion procedure — Stock Photo
    Female donor with patch on hand sitting in medical chair after blood transfusion procedure
    Fat in blood cells blocking blood vessel, digital illustration. — Stock Photo
    Fat in blood cells blocking blood vessel, digital illustration.
    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.
    Half of pawpaw with seeds between tangerines and cumquats with leaves on white crumpled cloth — Stock Photo
    Half of pawpaw with seeds between tangerines and cumquats with leaves on white crumpled cloth
    Human skin anatomy — Stock Photo
    Human skin anatomy
    Illustration of transparent blue silhouette of male body with colored heart. — Stock Photo
    Illustration of transparent blue silhouette of male body with colored heart.
    Crop female medical specialist in latex gloves performing injection with syringe to anonymous patient during procedure of blood transfusion in hospital — Stock Photo
    Crop female medical specialist in latex gloves performing injection with syringe to anonymous patient during procedure of blood transfusion in hospital
    Heap of raw radish with curved leaves and roots on green background — Stock Photo
    Heap of raw radish with curved leaves and roots on green background
    Green natural detail plant pattern — Stock Photo
    Green natural detail plant pattern
    Closeup view of rain drop on leaf — Stock Photo
    Closeup view of rain drop on leaf
    Crop unrecognizable female with spinach foliage over bowl on table during cooking process in house — Stock Photo
    Crop unrecognizable female with spinach foliage over bowl on table during cooking process in house