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    Healthy cardiovascular system — Stock Photo
    Healthy cardiovascular system
    Arteries in transparent dog body, anatomical computer illustration. — Stock Photo
    Arteries in transparent dog body, anatomical computer illustration.
    Fat in blood cells blocking blood vessel, digital illustration. — Stock Photo
    Fat in blood cells blocking blood vessel, digital illustration.
    Vascular system of female upper body, digital illustration — Stock Photo
    Vascular system of female upper body, digital illustration
    Illustration of male office worker vascular system. — Stock Photo
    Illustration of male office worker vascular system.
    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 heart in human body silhouette. — Stock Photo
    Illustration of heart in human body silhouette.
    Illustration of transparent blue silhouette of male body with colored heart. — Stock Photo
    Illustration of transparent blue silhouette of male body with colored heart.
    Nervous and circulatory systems — Stock Photo
    Nervous and circulatory systems
    Human body model showing male anatomy and blood vessels, digital illustration. — Stock Photo
    Human body model showing male anatomy and blood vessels, digital illustration.
    3d rendered illustration of human vascular system. — Stock Photo
    3d rendered illustration of human vascular system.
    3D rendering of human circulatory system on black background — Stock Photo
    3D rendering of human circulatory system on black background
    Abstract male body with visible lymphatic system of neck, computer illustration. — Stock Photo
    Abstract male body with visible lymphatic system of neck, computer illustration.
    Illustration of inflamed heart in human body silhouette. — Stock Photo
    Illustration of inflamed heart in human body silhouette.
    Human bronchi and heart, illustration — Stock Photo
    Human bronchi and heart, illustration
    Macrophage foam cells with lipid droplets, digital illustration. — Stock Photo
    Macrophage foam cells with lipid droplets, digital illustration.
    Brain's blood supply — Stock Photo
    Brain's blood supply
    Blood vessels of human shoulder, digital illustration. — Stock Photo
    Blood vessels of human shoulder, digital illustration.
    Illustration of stent inside of human fatty artery. — Stock Photo
    Illustration of stent inside of human fatty artery.
    Ebola virus in blood and close-up of virions, digital illustration. — Stock Photo
    Ebola virus in blood and close-up of virions, digital illustration.
    Grey human heart model on white background, computer illustration. — Stock Photo
    Grey human heart model on white background, computer illustration.
    Male head and neck anatomy, digital illustration. — Stock Photo
    Male head and neck anatomy, digital illustration.
    Anatomy of throat of woman, digital illustration. — Stock Photo
    Anatomy of throat of woman, digital illustration.
    Female body with visible cardiovascular system, digital illustration — Stock Photo
    Female body with visible cardiovascular system, digital illustration
    Female anatomy showing heart in transparent body silhouette, computer illustration. — Stock Photo
    Female anatomy showing heart in transparent body silhouette, computer illustration.
    Arteries in transparent dog body, anatomical computer illustration. — Stock Photo
    Arteries in transparent dog body, anatomical computer illustration.
    Light micrograph of a longitudinal section of plant vascular tissue. — Stock Photo
    Light micrograph of a longitudinal section of plant vascular tissue.
    Coronary arteries, computer illustration. — Stock Photo
    Coronary arteries, computer illustration.
    Broom stem. Light micrograph (LM) of transverse section through stem of common broom (Salicornia europaea) plant. Broom is drought plant (xerophyte) with ribbed stems and branches to increase area for photosynthesis — Stock Photo
    Broom stem. Light micrograph (LM) of transverse section through stem of common broom (Salicornia europaea) plant. Broom is drought plant (xerophyte) with ribbed stems and branches to increase area for photosynthesis
    Illustration of silhouette of obese man with visible heart. — Stock Photo
    Illustration of silhouette of obese man with visible heart.
    Artery partially blocked by an atheroma — Stock Photo
    Artery partially blocked by an atheroma
    Male body with visible vascular system, computer illustration. — Stock Photo
    Male body with visible vascular system, computer illustration.
    Bacteriophages infecting bacteria, digital illustration. — Stock Photo
    Bacteriophages infecting bacteria, digital illustration.
    Male lymphatic system of neck and skull, computer illustration. — Stock Photo
    Male lymphatic system of neck and skull, computer illustration.
    Male lymphatic system of neck and skull, computer illustration. — Stock Photo
    Male lymphatic system of neck and skull, computer illustration.
    Maize root. Light micrograph (LM) of section through root of maize plant (Zea mays) showing typical monocot arrangement of vascular bundles. central vascular cylinder is comprised of central cluster of parenchyma cells — Stock Photo
    Maize root. Light micrograph (LM) of section through root of maize plant (Zea mays) showing typical monocot arrangement of vascular bundles. central vascular cylinder is comprised of central cluster of parenchyma cells
    Male upper body anatomy and internal organs, computer illustration. — Stock Photo
    Male upper body anatomy and internal organs, computer illustration.
    Anatomical male model showing lymphatic system, digital illustration. — Stock Photo
    Anatomical male model showing lymphatic system, digital illustration.
    Medical illustration of blocked artery disorder. — Stock Photo
    Medical illustration of blocked artery disorder.
    Blood vessels of human head and neck, digital illustration. — Stock Photo
    Blood vessels of human head and neck, digital illustration.
    Illustration of heart in human body silhouette. — Stock Photo
    Illustration of heart in human body silhouette.
    Female body with visible cardiovascular system, digital illustration. — Stock Photo
    Female body with visible cardiovascular system, digital illustration.
    Male head and neck anatomy and blood vessels, computer illustration. — Stock Photo
    Male head and neck anatomy and blood vessels, computer illustration.
    Human upper body blood vessels, digital illustration. — Stock Photo
    Human upper body blood vessels, digital illustration.
    Female abdominal blood vessels, computer illustration. — Stock Photo
    Female abdominal blood vessels, computer illustration.
    Anatomical male model showing lymphatic system, digital illustration. — Stock Photo
    Anatomical male model showing lymphatic system, digital illustration.
    Vascular system in normal female body, digital illustration — Stock Photo
    Vascular system in normal female body, digital illustration
    Male head and neck anatomy, digital illustration. — Stock Photo
    Male head and neck anatomy, digital illustration.
    3d rendered illustration of vascular system of human head. — Stock Photo
    3d rendered illustration of vascular system of human head.
    Macrophage foam cells with lipid droplets, digital illustration. — Stock Photo
    Macrophage foam cells with lipid droplets, digital illustration.
    Blood vessels of the head, computer illustration — Stock Photo
    Blood vessels of the head, computer illustration
    3d illustration of constricted and narrowed artery while arteriosclerosis. — Stock Photo
    3d illustration of constricted and narrowed artery while arteriosclerosis.
    Female anatomy showing heart in transparent body silhouette, computer illustration. — Stock Photo
    Female anatomy showing heart in transparent body silhouette, computer illustration.
    Illustration of human anatomy on white background. — Stock Photo
    Illustration of human anatomy on white background.
    Vascular system in normal female body, digital illustration — Stock Photo
    Vascular system in normal female body, digital illustration
    Patient with a heart pacemaker — Stock Photo
    Patient with a heart pacemaker
    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.
    Sea Purslane (Sesuvium portulacastrum) blooming in Kealia Pond National Wildlife Refuge; Maui, Hawaii, United States of America — Stock Photo
    Sea Purslane (Sesuvium portulacastrum) blooming in Kealia Pond National Wildlife Refuge; Maui, Hawaii, United States of America
    Coronary blood vessels in blue human heart model, digital illustration. — Stock Photo
    Coronary blood vessels in blue human heart model, digital illustration.
    Bacteria amidst blood cells in blood vessel, digital illustration. — Stock Photo
    Bacteria amidst blood cells in blood vessel, digital illustration.