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    Female anatomy showing vascular system, digital illustration. — Stock Photo
    Female anatomy showing vascular system, digital illustration.
    Ebola virus particles in blood, digital illustration. — Stock Photo
    Ebola virus particles in blood, digital illustration.
    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 figure of obese man with visible heart. — Stock Photo
    Illustration of figure of obese man with visible heart.
    Female body with visible heart and cardiovascular system, digital illustration. — Stock Photo
    Female body with visible heart and cardiovascular system, digital illustration.
    Vascular system of human head, computer illustration. — Stock Photo
    Vascular system of human head, computer illustration.
    Elm stem. Light micrograph (LM) of cross-section through woody stem of elm (Ulmus procera) tree. — Stock Photo
    Elm stem. Light micrograph (LM) of cross-section through woody stem of elm (Ulmus procera) tree.
    Illustration of silhouette of obese man with visible heart. — Stock Photo
    Illustration of silhouette of obese man with visible heart.
    Plant leaf structure, illustration. Cross-section of a typical plant leaf. In most plants, leaves are the major site of photosynthesis — Stock Photo
    Plant leaf structure, illustration. Cross-section of a typical plant leaf. In most plants, leaves are the major site of photosynthesis
    Bacteria amidst blood cells in blood vessel, digital illustration. — Stock Photo
    Bacteria amidst blood cells in blood vessel, digital illustration.
    Illustration of heart in human body silhouette. — Stock Photo
    Illustration of heart in human body silhouette.
    Male anatomy showing vascular system, computer illustration. — Stock Photo
    Male anatomy showing vascular system, computer illustration.
    Woman undergoing examination in skin clinic — Stock Photo
    Woman undergoing examination in skin clinic
    Female body showing neck anatomy, computer illustration. — Stock Photo
    Female body showing neck anatomy, computer illustration.
    Illustration of transparent blue silhouette of male body with colored heart. — Stock Photo
    Illustration of transparent blue silhouette of male body with colored heart.
    Female abdominal vascular system, computer illustration. — Stock Photo
    Female abdominal vascular system, computer illustration.
    Male upper body anatomy and internal organs in low angle view, computer illustration. — Stock Photo
    Male upper body anatomy and internal organs in low angle view, computer illustration.
    Woman undergoing examination in skin clinic. — Stock Photo
    Woman undergoing examination in skin clinic.
    Macrophage foam cells with lipid droplets, digital illustration. — Stock Photo
    Macrophage foam cells with lipid droplets, digital illustration.
    Illustration on black of silhouette of obese woman with highlighted heart. — Stock Photo
    Illustration on black of silhouette of obese woman with highlighted heart.
    Female heart and vascular system, digital illustration. — Stock Photo
    Female heart and vascular system, digital illustration.
    Human Aorta, computer illustration. — Stock Photo
    Human Aorta, computer illustration.
    Illustration of heart in human body silhouette. — Stock Photo
    Illustration of heart in human body silhouette.
    Vascular system in normal female body, digital illustration — Stock Photo
    Vascular system in normal female body, digital illustration
    Head anatomy, computer illustration — Stock Photo
    Head anatomy, computer illustration
    Illustration of heart in human body silhouette. — Stock Photo
    Illustration of heart in human body silhouette.
    Illustration of human silhouette with painful heart. — Stock Photo
    Illustration of human silhouette with painful heart.
    Male head and neck anatomy and musculature, digital illustration. — Stock Photo
    Male head and neck anatomy and musculature, digital illustration.
    Structure of dog vascular system with colorful blood vessels in transparent body, cropped, computer illustration. — Stock Photo
    Structure of dog vascular system with colorful blood vessels in transparent body, cropped, computer illustration.
    Computer illustration showing the common location of ulcers in diabetic foot infection. — Stock Photo
    Computer illustration showing the common location of ulcers in diabetic foot infection.
    Illustration of human heart in body silhouette. — Stock Photo
    Illustration of human heart in body silhouette.
    Heart anatomy in male thorax, computer illustration. — Stock Photo
    Heart anatomy in male thorax, computer illustration.
    Lymphatic system of male upper body, computer illustration. — Stock Photo
    Lymphatic system of male upper body, computer illustration.
    Atherosclerosis and narrowed artery — Stock Photo
    Atherosclerosis and narrowed artery
    Kidney glomerulus and podocyte cells — Stock Photo
    Kidney glomerulus and podocyte cells
    Illustration of group of cells in blood clot. — Stock Photo
    Illustration of group of cells in blood clot.
    Blood vessels of human head and neck, digital illustration. — Stock Photo
    Blood vessels of human head and neck, digital illustration.
    Brain blood supply — Stock Photo
    Brain blood supply
    Illustration of silhouette of obese man with visible heart. — Stock Photo
    Illustration of silhouette of obese man with visible heart.
    Realistic human body model showing male anatomy with internal organs, digital illustration. — Stock Photo
    Realistic human body model showing male anatomy with internal organs, digital illustration.
    Human blood, computer illustration — Stock Photo
    Human blood, computer illustration
    Adult female traveler with lush green plant leaf looking away during trip in woods — Stock Photo
    Adult female traveler with lush green plant leaf looking away during trip in woods
    Female heart and vascular system, digital illustration. — Stock Photo
    Female heart and vascular system, digital illustration.
    Realistic human heart and blood vessels on black background, digital illustration. — Stock Photo
    Realistic human heart and blood vessels on black background, digital illustration.
    Abstract female model with visible skeleton and lymphatic system, computer illustration. — Stock Photo
    Abstract female model with visible skeleton and lymphatic system, computer illustration.
    Female body with heart attack, conceptual digital illustration. — Stock Photo
    Female body with heart attack, conceptual digital illustration.
    Illustration of overweight woman with visible heart on black background. — Stock Photo
    Illustration of overweight woman with visible heart on black background.
    Grey human heart model on red background, computer illustration. — Stock Photo
    Grey human heart model on red background, computer illustration.
    3d rendered illustration of vascular system of human head. — Stock Photo
    3d rendered illustration of vascular system of human head.
    Artery partially blocked by an atheroma — Stock Photo
    Artery partially blocked by an atheroma
    Transparent female body with visible lymphatic system, digital illustration. — Stock Photo
    Transparent female body with visible lymphatic system, digital illustration.
    Senior patient undergoing heart ultrasound scanning by female doctor. — Stock Photo
    Senior patient undergoing heart ultrasound scanning by female doctor.
    Medical illustration of human blood vessels of neck. — Stock Photo
    Medical illustration of human blood vessels of neck.
    Cardiovascular system in normal male body, computer illustration. — Stock Photo
    Cardiovascular system in normal male body, computer illustration.
    Runner silhouette with visible heart, composite digital illustration. — Stock Photo
    Runner silhouette with visible heart, composite digital illustration.
    Root vascular tissue, light micrograph. — Stock Photo
    Root vascular tissue, light micrograph.
    Human heart anatomy — Stock Photo
    Human heart anatomy
    3d rendered illustration of heart attack on white background. — Stock Photo
    3d rendered illustration of heart attack on white background.
    Medical illustration of fat inside of human artery. — Stock Photo
    Medical illustration of fat inside of human artery.
    Artery partially blocked by atheroma — Stock Photo
    Artery partially blocked by atheroma