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    Illustration of blue silhouette of obese woman with highlighted heart. — Stock Photo
    Illustration of blue silhouette of obese woman with highlighted heart.
    Grtzwurst blood sausages — Stock Photo
    Grtzwurst blood sausages
    Realistic human heart model on black background, computer illustration. — Stock Photo
    Realistic human heart model on black background, computer illustration.
    Illustration of fat inside of human artery. — Stock Photo
    Illustration of fat inside of human artery.
    Red blood cells in the bloodstream — Stock Photo
    Red blood cells in the bloodstream
    Illustration of human heart and lung on white background. — Stock Photo
    Illustration of human heart and lung on white background.
    Illustration showing different types of blood cells, erythrocytes, neutrophil, monocyte, basophil, eosinophil, lymphocyte, and platelets. — Stock Photo
    Illustration showing different types of blood cells, erythrocytes, neutrophil, monocyte, basophil, eosinophil, lymphocyte, and platelets.
    Crop female medical specialist in latex gloves performing injection with syringe to anonymous patient during procedure of blood transfusion in hospital — Stock Photo
    Crop female medical specialist in latex gloves performing injection with syringe to anonymous patient during procedure of blood transfusion in hospital
    Illustration of platelets (thrombocytes) that have been activated (with extensions) and those that are non-activated. Platelets are part of the blood. When a blood vessel is damaged, the platelets become activated and secrete chemicals that cause the — Stock Photo
    Illustration of platelets (thrombocytes) that have been activated (with extensions) and those that are non-activated. Platelets are part of the blood. When a blood vessel is damaged, the platelets become activated and secrete chemicals that cause the
    Head louse on human hair, digital illustration. — Stock Photo
    Head louse on human hair, digital illustration.
    Female doctor teaching diabetic senior patient how to use glucometer — Stock Photo
    Female doctor teaching diabetic senior patient how to use glucometer
    Protozoan Plasmodium falciparum, causative agent of tropical malaria, digital illustration. — Stock Photo
    Protozoan Plasmodium falciparum, causative agent of tropical malaria, digital illustration.
    Blood orange slices with a citrus press — Stock Photo
    Blood orange slices with a citrus press
    Human heart circulatory and electrical system, 3d illustration. Cross section of the heart showing the ventricles and valves, and the electrical (conduction) system (yellow lines) and circulatory system (red and blue lines). — Stock Photo
    Human heart circulatory and electrical system, 3d illustration. Cross section of the heart showing the ventricles and valves, and the electrical (conduction) system (yellow lines) and circulatory system (red and blue lines).
    Red blood cells and platelets, computer illustration. — Stock Photo
    Red blood cells and platelets, computer illustration.
    Blood oranges in bowl with halves — Stock Photo
    Blood oranges in bowl with halves
    Parasitic tick feeding — Stock Photo
    Parasitic tick feeding
    Lymphocyte white blood cell in human lymphatic system, digital illustration. — Stock Photo
    Lymphocyte white blood cell in human lymphatic system, digital illustration.
    Cropped shot of physician measuring patient'd blood pressure with tonometer — Stock Photo
    Cropped shot of physician measuring patient'd blood pressure with tonometer
    Close-up of heated cups on client back for cupping therapy. — Stock Photo
    Close-up of heated cups on client back for cupping therapy.
    Parasitic louse on human head skin, digital illustration. — Stock Photo
    Parasitic louse on human head skin, digital illustration.
    Cropped image of Doctor checking blood pressure of patient in clinic — Stock Photo
    Cropped image of Doctor checking blood pressure of patient in clinic
    Coloured angiogram (blood vessel X-ray) of the coronary arteries of a 52 year old patient. The artery at right has had a stent placed in it to treat a blockage. — Stock Photo
    Coloured angiogram (blood vessel X-ray) of the coronary arteries of a 52 year old patient. The artery at right has had a stent placed in it to treat a blockage.
    Head louse on human hair — Stock Photo
    Head louse on human hair
    Arteries in transparent dog body, cropped, anatomical computer illustration. — Stock Photo
    Arteries in transparent dog body, cropped, anatomical computer illustration.
    Red cabbage coleslaw with blood orange and walnuts — Stock Photo
    Red cabbage coleslaw with blood orange and walnuts
    Close-up of hands of mature woman using paper strip to test blood glucose. — Stock Photo
    Close-up of hands of mature woman using paper strip to test blood glucose.
    Heart attack in human body, conceptual illustration. — Stock Photo
    Heart attack in human body, conceptual illustration.
    Red blood cells with fibrin — Stock Photo
    Red blood cells with fibrin
    Bacteriophage t4 virus and red blood cell — Stock Photo
    Bacteriophage t4 virus and red blood cell
    Male doctor checking blood pressure of senior patient in doctors office — Stock Photo
    Male doctor checking blood pressure of senior patient in doctors office
    Red blood cells, digital illustration. — Stock Photo
    Red blood cells, digital illustration.
    Top view of different types of sliced exotic fruits with whole oranges and leaves — Stock Photo
    Top view of different types of sliced exotic fruits with whole oranges and leaves
    Blood moon eclipse at nighttime, black background — Stock Photo
    Blood moon eclipse at nighttime, black background
    Blood orange slices (full frame, seen from above) — Stock Photo
    Blood orange slices (full frame, seen from above)
    T lymphocyte cells attached to cancer cell — Stock Photo
    T lymphocyte cells attached to cancer cell
    Digital illustration of trypanosome protozoan parasite causing sleeping sickness transmitted by blood. — Stock Photo
    Digital illustration of trypanosome protozoan parasite causing sleeping sickness transmitted by blood.
    Lymphocyte white blood cells — Stock Photo
    Lymphocyte white blood cells
    Tatare wraps with orange — Stock Photo
    Tatare wraps with orange
    Blood samples for testing in microcentrifuge tubes. — Stock Photo
    Blood samples for testing in microcentrifuge tubes.
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia. — Stock Photo
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia.
    Mid section of laboratory technician writing on a tag in blood bank — Stock Photo
    Mid section of laboratory technician writing on a tag in blood bank
    Side view of young asian male doctor checking blood pressure of caucasian boy patient in clinic — Stock Photo
    Side view of young asian male doctor checking blood pressure of caucasian boy patient in clinic
    Senior couple checking blood pressure at home — Stock Photo
    Senior couple checking blood pressure at home
    Coloured scanning electron micrograph (SEM) of a human red blood cell (erythrocyte, red) and a white blood cell (leucoocyte, blue). — Stock Photo
    Coloured scanning electron micrograph (SEM) of a human red blood cell (erythrocyte, red) and a white blood cell (leucoocyte, blue).
    Structure of white blood cell — Stock Photo
    Structure of white blood cell
    Side view of male doctor checking blood pressure of senior patient blood pressure gauge at clinic — Stock Photo
    Side view of male doctor checking blood pressure of senior patient blood pressure gauge at clinic
    Illustration of heart in human body silhouette. — Stock Photo
    Illustration of heart in human body silhouette.
    Illustration of human silhouette with inflamed heart. — Stock Photo
    Illustration of human silhouette with inflamed heart.
    Illustration of CAR (chimeric antigen receptor) T cell immunotherapy, process that is being developed to treat cancer — Stock Photo
    Illustration of CAR (chimeric antigen receptor) T cell immunotherapy, process that is being developed to treat cancer
    Blood vessels of foot, computer illustration — Stock Photo
    Blood vessels of foot, computer illustration
    Laboratory technician holding plasma bags in blood bank — Stock Photo
    Laboratory technician holding plasma bags in blood bank
    Bottle of Pills with Glass of Water and Dish — Stock Photo
    Bottle of Pills with Glass of Water and Dish
    Close-up of human blood and various hiv samples in test tubes while screening in medical lab. — Stock Photo
    Close-up of human blood and various hiv samples in test tubes while screening in medical lab.
    Red blood cells in the bloodstream — Stock Photo
    Red blood cells in the bloodstream
    Fish and chips with flower salad — Stock Photo
    Fish and chips with flower salad
    Toast with blood orange jam and soft cheese — Stock Photo
    Toast with blood orange jam and soft cheese
    Male head and neck anatomy and blood vessels, computer illustration. — Stock Photo
    Male head and neck anatomy and blood vessels, computer illustration.
    Paramedics examining injured girl on street — Stock Photo
    Paramedics examining injured girl on street
    Male anatomy with tissue and systems — Stock Photo
    Male anatomy with tissue and systems