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    Blood clot or thrombus — Stock Photo
    Blood clot or thrombus
    Bacteria amidst blood cells in blood vessel, digital illustration. — Stock Photo
    Bacteria amidst blood cells in blood vessel, digital illustration.
    Illustration of silhouette of obese man with visible heart. — Stock Photo
    Illustration of silhouette of obese man with visible heart.
    Anatomical male model showing lymphatic system, digital illustration. — Stock Photo
    Anatomical male model showing lymphatic system, digital illustration.
    View of Brain anatomy — Stock Photo
    View of Brain anatomy
    Female body with visible cardiovascular system, digital illustration. — Stock Photo
    Female body with visible cardiovascular system, digital illustration.
    Illustration of silhouette of obese man with visible heart. — Stock Photo
    Illustration of silhouette of obese man with visible heart.
    Man holding a heart, computer illustration. — Stock Photo
    Man holding a heart, computer illustration.
    Bacteria amidst blood cells in blood vessel, digital illustration. — Stock Photo
    Bacteria amidst blood cells in blood vessel, digital illustration.
    Abstract male body with visible skeleton and lymphatic system, computer illustration. — Stock Photo
    Abstract male body with visible skeleton and lymphatic system, computer illustration.
    Veins in transparent dog body, cropped, anatomical computer illustration. — Stock Photo
    Veins in transparent dog body, cropped, anatomical computer illustration.
    Male head and neck anatomy and musculature, digital illustration. — Stock Photo
    Male head and neck anatomy and musculature, digital illustration.
    3d rendered illustration of vascular system of human head. — Stock Photo
    3d rendered illustration of vascular system of human head.
    Female body with visible vascular system, digital illustration. — Stock Photo
    Female body with visible vascular system, digital illustration.
    Human upper body blood vessels, digital illustration. — Stock Photo
    Human upper body blood vessels, digital illustration.
    Human heart anatomy — Stock Photo
    Human heart anatomy
    Vascular system in male body, computer illustration. — Stock Photo
    Vascular system in male body, computer illustration.
    Cardiovascular system in normal male body, computer illustration. — Stock Photo
    Cardiovascular system in normal male body, computer illustration.
    Male head and neck anatomy and blood vessels, computer illustration. — Stock Photo
    Male head and neck anatomy and blood vessels, computer illustration.
    Full dog anatomy with internal organs, digital illustration. — Stock Photo
    Full dog anatomy with internal organs, digital illustration.
    Dog anatomy with musculature and internal organs, digital illustration. — Stock Photo
    Dog anatomy with musculature and internal organs, digital illustration.
    Illustration of heart in human body silhouette. — Stock Photo
    Illustration of heart in human body silhouette.
    Male thorax with lymphatic system, computer illustration. — Stock Photo
    Male thorax with lymphatic system, computer illustration.
    Male vascular system — Stock Photo
    Male vascular system
    3d rendered illustration of human heart. — Stock Photo
    3d rendered illustration of human heart.
    Blood supply of neck and head — Stock Photo
    Blood supply of neck and head
    3d rendered illustration of male cyclist heart while biking on black background. — Stock Photo
    3d rendered illustration of male cyclist heart while biking on black background.
    Head anatomy, computer illustration — Stock Photo
    Head anatomy, computer illustration
    Abstract male body with visible skeleton and lymphatic system, computer illustration. — Stock Photo
    Abstract male body with visible skeleton and lymphatic system, computer illustration.
    Cardiovascular system in normal male body, low angle view, computer illustration. — Stock Photo
    Cardiovascular system in normal male body, low angle view, computer illustration.
    Structure of dog vascular system with colorful blood vessels in transparent body, computer illustration. — Stock Photo
    Structure of dog vascular system with colorful blood vessels in transparent body, computer illustration.
    Human heart model on blue background, computer illustration. — Stock Photo
    Human heart model on blue background, computer illustration.
    Artery partially blocked by atheroma — Stock Photo
    Artery partially blocked by atheroma
    Anatomical male model showing lymphatic system, digital illustration. — Stock Photo
    Anatomical male model showing lymphatic system, digital illustration.
    Male body silhouette showing heart anatomy, computer illustration. — Stock Photo
    Male body silhouette showing heart anatomy, computer illustration.
    Helianthus stem. Light micrograph (LM) of stem of perennial sunflower (Helianthus sp.) in cross-section showing vascular bundles (green, yellow). Vascular tissues transport water and dissolved substances inside plant — Stock Photo
    Helianthus stem. Light micrograph (LM) of stem of perennial sunflower (Helianthus sp.) in cross-section showing vascular bundles (green, yellow). Vascular tissues transport water and dissolved substances inside plant
    Full dog musculature with internal organs, digital illustration. — Stock Photo
    Full dog musculature with internal organs, digital illustration.
    Illustration of female silhouette with highlighted heart. — Stock Photo
    Illustration of female silhouette with highlighted heart.
    Female upper body blood vessels, digital illustration. — Stock Photo
    Female upper body blood vessels, digital illustration.
    Macrophage foam cells with lipid droplets, digital illustration. — Stock Photo
    Macrophage foam cells with lipid droplets, digital illustration.
    Fat in blood cells blocking blood vessel, digital illustration. — Stock Photo
    Fat in blood cells blocking blood vessel, digital illustration.
    Female obese body with visible vascular system, digital illustration — Stock Photo
    Female obese body with visible vascular system, digital illustration
    Blood vessels of the head, computer illustration — Stock Photo
    Blood vessels of the head, computer illustration
    Anatomical male model showing lymphatic system, digital illustration. — Stock Photo
    Anatomical male model showing lymphatic system, digital illustration.
    Illustration of inflamed heart in human body silhouette. — Stock Photo
    Illustration of inflamed heart in human body silhouette.
    Female anatomical body with visible lymphatic system, computer illustration. — Stock Photo
    Female anatomical body with visible lymphatic system, computer illustration.
    Cardiovascular system in normal male body, computer illustration. — Stock Photo
    Cardiovascular system in normal male body, computer illustration.
    Illustration of heart in silhouette of female body. — Stock Photo
    Illustration of heart in silhouette of female body.
    Human artery showing artery walls and bloodstream — Stock Photo
    Human artery showing artery walls and bloodstream
    Illustration of senior woman silhouette with colored heart on black background. — Stock Photo
    Illustration of senior woman silhouette with colored heart on black background.
    Blood vessels of human head and neck, digital illustration. — Stock Photo
    Blood vessels of human head and neck, digital illustration.
    Male body silhouette showing heart anatomy, computer illustration. — Stock Photo
    Male body silhouette showing heart anatomy, computer illustration.
    Male abdominal blood vessels, digital illustration. — Stock Photo
    Male abdominal blood vessels, digital illustration.
    Human cardiovascular system — Stock Photo
    Human cardiovascular system
    Crop person holding huge green leaf of fern against empty asphalt road among blurred dense forest with bare trees during daytime — Stock Photo
    Crop person holding huge green leaf of fern against empty asphalt road among blurred dense forest with bare trees during daytime
    Female anatomy showing vascular system, digital illustration. — Stock Photo
    Female anatomy showing vascular system, digital illustration.
    Illustration of fat inside of human artery. — Stock Photo
    Illustration of fat inside of human artery.
    Illustration of realistic human heart with 2 bypasses. — Stock Photo
    Illustration of realistic human heart with 2 bypasses.
    Abstract blood vessel with white and red blood cells, digital illustration. — Stock Photo
    Abstract blood vessel with white and red blood cells, digital illustration.
    Vascular system of human head, computer illustration. — Stock Photo
    Vascular system of human head, computer illustration.