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    Section through a full term placenta — Stock Photo
    Section through a full term placenta
    Coloured scanning electron micrograph (SEM) of a section through a foetal vein filled with red blood cells (erythrocytes, red). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through a foetal vein filled with red blood cells (erythrocytes, red).
    Platelets in human blood, computer illustration. — Stock Photo
    Platelets in human blood, computer illustration.
    Illustration of heart in silhouette of female body. — Stock Photo
    Illustration of heart in silhouette of female body.
    3d rendered illustration of human heart. — Stock Photo
    3d rendered illustration of human heart.
    Illustration of silhouette of obese man with visible heart. — Stock Photo
    Illustration of silhouette of obese man with visible heart.
    Heart of glass anatomy — Stock Photo
    Heart of glass anatomy
    Cardiovascular system transporting nutrients and oxygen — Stock Photo
    Cardiovascular system transporting nutrients and oxygen
    Illustration of heart in human body silhouette. — Stock Photo
    Illustration of heart in human body silhouette.
    Human veins anatomy — Stock Photo
    Human veins anatomy
    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.
    Illustration of fatty heart on black background. — Stock Photo
    Illustration of fatty heart on black background.
    Coronary arteries, computer illustration. — Stock Photo
    Coronary arteries, computer illustration.
    Skeletal and cardiovascular systems — Stock Photo
    Skeletal and cardiovascular systems
    Low angle view illustration of blue silhouette of obese woman with highlighted heart on black background. — Stock Photo
    Low angle view illustration of blue silhouette of obese woman with highlighted heart on black background.
    Digital illustration of human alveoli on white background. — Stock Photo
    Digital illustration of human alveoli on white background.
    Illustration of aortic aneurysm in human heart. — Stock Photo
    Illustration of aortic aneurysm in human heart.
    Abstract blood vessel with white and red blood cells, digital illustration. — Stock Photo
    Abstract blood vessel with white and red blood cells, digital illustration.
    Illustration of heart in transparent male silhouette. — Stock Photo
    Illustration of heart in transparent male silhouette.
    Normal and healthy abdomen anatomy — Stock Photo
    Normal and healthy abdomen anatomy
    Illustration of silhouette of obese man with visible heart. — Stock Photo
    Illustration of silhouette of obese man with visible heart.
    Illustration of female silhouette with highlighted heart. — Stock Photo
    Illustration of female silhouette with highlighted heart.
    Male anatomy with tissue and systems — Stock Photo
    Male anatomy with tissue and systems
    Virus particles spreading through blood stream — Stock Photo
    Virus particles spreading through blood stream
    Focused child with green plant leaf looking through magnifying glass in woods on blurred background — Stock Photo
    Focused child with green plant leaf looking through magnifying glass in woods on blurred background
    Bacteria amidst blood cells in blood vessel, digital illustration. — Stock Photo
    Bacteria amidst blood cells in blood vessel, digital illustration.
    Illustration of figure of obese man with visible heart. — Stock Photo
    Illustration of figure of obese man with visible heart.
    Illustration of kidney cancer on white background. — Stock Photo
    Illustration of kidney cancer on white background.
    3d rendered illustration of colored female heart in body silhouette. — Stock Photo
    3d rendered illustration of colored female heart in body silhouette.
    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
    Normal blood vessels, X-ray — Stock Photo
    Normal blood vessels, X-ray
    Illustration of cross section of kidneys on white background. — Stock Photo
    Illustration of cross section of kidneys on white background.
    Skeletal and cardiovascular systems — Stock Photo
    Skeletal and cardiovascular systems
    Healthy cardiovascular system — Stock Photo
    Healthy cardiovascular system
    Abstract blood vessel with white and red blood cells, digital illustration. — Stock Photo
    Abstract blood vessel with white and red blood cells, digital illustration.
    Rows of lettuce plants with wavy foliage growing in holes of covering material against greenhouse on farmland — Stock Photo
    Rows of lettuce plants with wavy foliage growing in holes of covering material against greenhouse on farmland
    Illustration of platelets fixing wound with erythrocytes blood flow. — Stock Photo
    Illustration of platelets fixing wound with erythrocytes blood flow.
    Texture of dry fallen orange autumn leaf with thin veins and stem against blurred gray background — Stock Photo
    Texture of dry fallen orange autumn leaf with thin veins and stem against blurred gray background
    Illustration of heart in human body silhouette. — Stock Photo
    Illustration of heart in human body silhouette.
    Rhubarb stems and leaves arranged in a circular frame (top view) — Stock Photo
    Rhubarb stems and leaves arranged in a circular frame (top view)
    Illustration of female silhouette with inflamed heart. — Stock Photo
    Illustration of female silhouette with inflamed heart.
    A macro shot of green colorful parakeet feathers, bird anatomy — Stock Photo
    A macro shot of green colorful parakeet feathers, bird anatomy
    Schematic representation of human vein structure — Stock Photo
    Schematic representation of human vein structure
    Human skin anatomy — Stock Photo
    Human skin anatomy
    Red blood cells flowing inside an artery — Stock Photo
    Red blood cells flowing inside an artery
    Hand holding bright red leaf in autumn — Stock Photo
    Hand holding bright red leaf in autumn
    Closeup view of rain drop on leaf — Stock Photo
    Closeup view of rain drop on leaf
    Silhouette of a Baby Flying gecko through a leaf, Indonesia — Stock Photo
    Silhouette of a Baby Flying gecko through a leaf, Indonesia
    Illustration of female silhouette with highlighted heart. — Stock Photo
    Illustration of female silhouette with highlighted heart.
    Normal red blood cells — Stock Photo
    Normal red blood cells
    Bacteria amidst blood cells in blood vessel, digital illustration. — Stock Photo
    Bacteria amidst blood cells in blood vessel, digital illustration.
    Illustration of human blood cells on white background. — Stock Photo
    Illustration of human blood cells on white background.
    Illustration of silhouette of obese man with visible heart. — Stock Photo
    Illustration of silhouette of obese man with visible heart.
    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.
    Texture of dry fallen orange autumn leaf with thin veins and stem against blurred gray background — Stock Photo
    Texture of dry fallen orange autumn leaf with thin veins and stem against blurred gray background
    Conceptual computer Illustration of human heart anatomy. — Stock Photo
    Conceptual computer Illustration of human heart anatomy.
    Close-up of a leaf, Indonesia — Stock Photo
    Close-up of a leaf, Indonesia
    3d illustration of blood knot in artery vessel. — Stock Photo
    3d illustration of blood knot in artery vessel.
    Skeletal and cardiovascular systems of adult — Stock Photo
    Skeletal and cardiovascular systems of adult
    Skeletal and cardiovascular systems of adult — Stock Photo
    Skeletal and cardiovascular systems of adult