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    Bloodstream showing red blood cells — Stock Photo
    Bloodstream showing red blood cells
    Lung aneurysm, light micrograph. — Stock Photo
    Lung aneurysm, light micrograph.
    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 human body silhouette. — Stock Photo
    Illustration of heart in human body silhouette.
    Bacteria amidst blood cells in blood vessel, digital illustration. — Stock Photo
    Bacteria amidst blood cells in blood vessel, digital illustration.
    Plasmodium ovale protozoan parasites and red blood cell in flow, computer illustration. — Stock Photo
    Plasmodium ovale protozoan parasites and red blood cell in flow, computer illustration.
    Cholesterol plaque leading to atherosclerosis — Stock Photo
    Cholesterol plaque leading to atherosclerosis
    Illustration of senior woman silhouette with colored heart on black background. — Stock Photo
    Illustration of senior woman silhouette with colored heart on black background.
    Protozoan Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration. — Stock Photo
    Protozoan Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration.
    Digital illustration of senior man anatomy showing heart. — Stock Photo
    Digital illustration of senior man anatomy showing heart.
    Bacteria and viruses in human artery, digital illustration. — Stock Photo
    Bacteria and viruses in human artery, 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.
    Erythrocytes or red blood cells — Stock Photo
    Erythrocytes or red blood cells
    Coronavirus infection, conceptual illustration. — Stock Photo
    Coronavirus infection, conceptual illustration.
    Illustration of human heart anatomy on blue background. — Stock Photo
    Illustration of human heart anatomy on blue background.
    Digital illustration of senior man anatomy showing heart. — Stock Photo
    Digital illustration of senior man anatomy showing heart.
    Plasmodium vivax protozoan inside red blood cells, digital illustration. — Stock Photo
    Plasmodium vivax protozoan inside red blood cells, digital illustration.
    Cardiovascular system in normal male body, computer illustration. — Stock Photo
    Cardiovascular system in normal male body, computer illustration.
    Realistic human heart and blood vessels on white background, digital illustration. — Stock Photo
    Realistic human heart and blood vessels on white background, digital illustration.
    Diseased blood cells with bacteria, computer illustration. — Stock Photo
    Diseased blood cells with bacteria, computer illustration.
    Transparent human body with internal organs, nervous, lymphatic and circulatory systems — Stock Photo
    Transparent human body with internal organs, nervous, lymphatic and circulatory systems
    Skeletal and cardiovascular systems of adult — Stock Photo
    Skeletal and cardiovascular systems of adult
    Normal human arteries, — Stock Photo
    Normal human arteries,
    Erythrocytes and leukocytes blood cells in human blood vessel, digital illustration. — Stock Photo
    Erythrocytes and leukocytes blood cells in human blood vessel, digital illustration.
    Lung tissue, coloured transmission electron micrograph (TEM). — Stock Photo
    Lung tissue, coloured transmission electron micrograph (TEM).
    Vascular system in normal female body, digital illustration — Stock Photo
    Vascular system in normal female body, digital illustration
    3d illustration of activated platelets and thrombocytes while healing and closure of wound. — Stock Photo
    3d illustration of activated platelets and thrombocytes while healing and closure of wound.
    Human heart with coronary veins, digital illustration. — Stock Photo
    Human heart with coronary veins, digital illustration.
    Plasmodium ovale protozoan parasite and red blood cell in flow, computer illustration. — Stock Photo
    Plasmodium ovale protozoan parasite and red blood cell in flow, computer illustration.
    Medical illustration of arteries, veins and lymphatic system in human hand and arm — Stock Photo
    Medical illustration of arteries, veins and lymphatic system in human hand and arm
    Illustration of heart in transparent male silhouette. — Stock Photo
    Illustration of heart in transparent male silhouette.
    Male anatomy with tissue and systems — Stock Photo
    Male anatomy with tissue and systems
    Human cardiovascular system — Stock Photo
    Human cardiovascular system
    Medical illustration of female breast arteries, veins and lymphatic system — Stock Photo
    Medical illustration of female breast arteries, veins and lymphatic system
    Nanoparticles in blood — Stock Photo
    Nanoparticles in blood
    Astrocyte brain glial cell connecting neuronal cells to blood vessel, digital illustration. — Stock Photo
    Astrocyte brain glial cell connecting neuronal cells to blood vessel, digital illustration.
    Human heart with colored pulmonary trunk, computer illustration. — Stock Photo
    Human heart with colored pulmonary trunk, computer illustration.
    Blood vessels of the head, computer illustration — Stock Photo
    Blood vessels of the head, computer illustration
    Human bronchi and heart, illustration — Stock Photo
    Human bronchi and heart, illustration
    Male shoulder anatomy, digital illustration. — Stock Photo
    Male shoulder anatomy, digital illustration.
    Coloured scanning electron micrograph (SEM) of a section through healthy skin. — Stock Photo
    Coloured scanning electron micrograph (SEM) of a section through healthy skin.
    Veins in transparent dog body, cropped, anatomical computer illustration. — Stock Photo
    Veins in transparent dog body, cropped, anatomical computer illustration.
    Heart disease in female body, conceptual digital illustration. — Stock Photo
    Heart disease in female body, conceptual digital illustration.
    Realistic body model showing female anatomy of muscles, mammary glands and blood vessels, computer illustration. — Stock Photo
    Realistic body model showing female anatomy of muscles, mammary glands and blood vessels, computer illustration.
    Vascular system in normal female body, digital illustration — Stock Photo
    Vascular system in normal female body, digital illustration
    Illustration of bypass in human heart. — Stock Photo
    Illustration of bypass in human heart.
    Female upper body anatomy and internal organs, computer illustration. — Stock Photo
    Female upper body anatomy and internal organs, computer illustration.
    Astrocyte brain glial cell connecting neuronal cells to blood vessel, digital illustration. — Stock Photo
    Astrocyte brain glial cell connecting neuronal cells to blood vessel, digital illustration.
    Medical illustration of head arteries, veins and lymphatic system — Stock Photo
    Medical illustration of head arteries, veins and lymphatic system
    Cancer cells with blood vessel formation — Stock Photo
    Cancer cells with blood vessel formation
    Erythrocytes red blood cells in human blood vessel, digital illustration. — Stock Photo
    Erythrocytes red blood cells in human blood vessel, digital 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.
    Digital illustration of human body with external haemorrhoids. — Stock Photo
    Digital illustration of human body with external haemorrhoids.
    Realistic body model showing female anatomy on white background, computer illustration. — Stock Photo
    Realistic body model showing female anatomy on white background, computer illustration.
    Female anatomy showing heart in transparent body silhouette, computer illustration. — Stock Photo
    Female anatomy showing heart in transparent body silhouette, computer illustration.
    Three dimensional medical illustration of male chest with arteries, veins, heart and rib cage — Stock Photo
    Three dimensional medical illustration of male chest with arteries, veins, heart and rib cage
    Healthy female vascular system, computer illustration — Stock Photo
    Healthy female vascular system, computer illustration
    Plasmodium ovale protozoan parasite and red blood cell in flow, computer illustration. — Stock Photo
    Plasmodium ovale protozoan parasite and red blood cell in flow, computer illustration.
    Male abdominal blood vessels, digital illustration. — Stock Photo
    Male abdominal blood vessels, digital illustration.
    Female silhouette showing heart anatomy, computer illustration. — Stock Photo
    Female silhouette showing heart anatomy, computer illustration.