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    Digital illustration of senior man anatomy showing heart. — Stock Photo
    Digital illustration of senior man anatomy showing heart.
    Close-up of micropipette pipetting blood sample into microcentrifuge tubes. — Stock Photo
    Close-up of micropipette pipetting blood sample into microcentrifuge tubes.
    Crop anonymous female volunteer giving blood for save life in modern blood transfusion center — Stock Photo
    Crop anonymous female volunteer giving blood for save life in modern blood transfusion center
    Red blood cells, abstract digital illustration. — Stock Photo
    Red blood cells, abstract digital illustration.
    Colored scanning electron micrograph of human red blood cells erythrocytes, white blood cells leukocytes and platelet thrombocyte. — Stock Photo
    Colored scanning electron micrograph of human red blood cells erythrocytes, white blood cells leukocytes and platelet thrombocyte.
    3d illustration of red blood cells erythrocytes. — Stock Photo
    3d illustration of red blood cells erythrocytes.
    3d rendered illustration of vascular system of human head. — Stock Photo
    3d rendered illustration of vascular system of human head.
    Mid section of laboratory technician working in blood bank — Stock Photo
    Mid section of laboratory technician working in blood bank
    Babesia parasites inside red blood cell, computer illustration — Stock Photo
    Babesia parasites inside red blood cell, computer illustration
    Human heart with colored pulmonary trunk, computer illustration. — Stock Photo
    Human heart with colored pulmonary trunk, computer illustration.
    Blood supply network of human head — Stock Photo
    Blood supply network of human head
    Single test tube with blood sample. — Stock Photo
    Single test tube with blood sample.
    Pyoderma skin disease — Stock Photo
    Pyoderma skin disease
    Digital illustration of trypanosome parasites in blood vessel causing Chagas disease. — Stock Photo
    Digital illustration of trypanosome parasites in blood vessel causing Chagas disease.
    Female researcher preparing multi-well sample tray of blood for analysis. — Stock Photo
    Female researcher preparing multi-well sample tray of blood for analysis.
    Skeletal and cardiovascular systems — Stock Photo
    Skeletal and cardiovascular systems
    Male vascular system — Stock Photo
    Male vascular system
    Blood samples in PCR tubes. — Stock Photo
    Blood samples in PCR tubes.
    Forensics expert in protective suit writing in clipboard collecting evidence from crime scene. — Stock Photo
    Forensics expert in protective suit writing in clipboard collecting evidence from crime scene.
    Plasmodium vivax protozoa and red blood cells, digital illustration. — Stock Photo
    Plasmodium vivax protozoa and red blood cells, digital illustration.
    Close-up of laboratory technician wearing gloves in blood bank — Stock Photo
    Close-up of laboratory technician wearing gloves in blood bank
    Nanomachines working on red and white blood cells, digital illustration. — Stock Photo
    Nanomachines working on red and white blood cells, digital illustration.
    Digital illustration of senior man anatomy showing heart. — Stock Photo
    Digital illustration of senior man anatomy showing heart.
    Plasmodium malariae protozoa in blood vessel, computer illustration. — Stock Photo
    Plasmodium malariae protozoa in blood vessel, computer illustration.
    Female anatomy showing vascular system, digital illustration. — Stock Photo
    Female anatomy showing vascular system, digital illustration.
    Mini pavlovas with lemon curd and blood orange — Stock Photo
    Mini pavlovas with lemon curd and blood orange
    Crop anonymous vet doctor with syringe taking blood sample from cat during examination in veterinary clinic — Stock Photo
    Crop anonymous vet doctor with syringe taking blood sample from cat during examination in veterinary clinic
    Human blood cells, light micrograph. — Stock Photo
    Human blood cells, light micrograph.
    Illustration of overweight woman with visible heart on black background. — Stock Photo
    Illustration of overweight woman with visible heart on black background.
    Medical illustration of arteries, veins and lymphatic system in human legs — Stock Photo
    Medical illustration of arteries, veins and lymphatic system in human legs
    Transparent human body showing heart and main circulatory system with internal organs, nervous, lymphatic and circulatory systems — Stock Photo
    Transparent human body showing heart and main circulatory system with internal organs, nervous, lymphatic and circulatory systems
    Red blood cells in the bloodstream — Stock Photo
    Red blood cells in the bloodstream
    3d illustration of lymphocytes attacking cancer cells in human body. — Stock Photo
    3d illustration of lymphocytes attacking cancer cells in human body.
    Close-up of person hand pushing bulb of blood pressure gauge. — Stock Photo
    Close-up of person hand pushing bulb of blood pressure gauge.
    Human skin anatomy — Stock Photo
    Human skin anatomy
    Angel food cake with blood orange glaze — Stock Photo
    Angel food cake with blood orange glaze
    Red and white blood cells — Stock Photo
    Red and white blood cells
    Medical illustration of pulmonary embolism — Stock Photo
    Medical illustration of pulmonary embolism
    Male body with visible vascular system, computer illustration. — Stock Photo
    Male body with visible vascular system, computer illustration.
    Human heart with vessels, lungs, bronchial tree and cut rib cage in x-ray effect on black background. — Stock Photo
    Human heart with vessels, lungs, bronchial tree and cut rib cage in x-ray effect on black background.
    Close-up of external filter for treatment of patient with kidney failure. — Stock Photo
    Close-up of external filter for treatment of patient with kidney failure.
    Plasmodium malariae protozoa in blood vessel, computer illustration. — Stock Photo
    Plasmodium malariae protozoa in blood vessel, computer illustration.
    Normal red blood cells — Stock Photo
    Normal red blood cells
    Blood cells and Plasmodium sp. parasites (at schizont stage) causing malaria, computer illustration. — Stock Photo
    Blood cells and Plasmodium sp. parasites (at schizont stage) causing malaria, computer illustration.
    Light micrograph of a section through tissue showing an artery (middle ) and a vein (top left). — Stock Photo
    Light micrograph of a section through tissue showing an artery (middle ) and a vein (top left).
    Donor blood in blood bags, close-up. — Stock Photo
    Donor blood in blood bags, close-up.
    Female body with visible vascular system, computer illustration. — Stock Photo
    Female body with visible vascular system, computer illustration.
    Illustration of two bypasses in human heart. — Stock Photo
    Illustration of two bypasses in human heart.
    Open sandwich with brown sauce on plate — Stock Photo
    Open sandwich with brown sauce on plate
    Nanobot in bloodstream with red erythrocytes, digital illustration. — Stock Photo
    Nanobot in bloodstream with red erythrocytes, digital illustration.
    Bacteria amidst blood cells in blood vessel, digital illustration. — Stock Photo
    Bacteria amidst blood cells in blood vessel, digital illustration.
    Low angle side view of young female in protective mask browsing smartphone during procedure of blood transfusion in hospital — Stock Photo
    Low angle side view of young female in protective mask browsing smartphone during procedure of blood transfusion in hospital
    Plasmodium malariae protozoan inside red blood cells in the ring-form trophozoite stage, computer illustration — Stock Photo
    Plasmodium malariae protozoan inside red blood cells in the ring-form trophozoite stage, computer illustration
    Anatomy of human bone marrow with labels — Stock Photo
    Anatomy of human bone marrow with labels
    Close-up of doctor measuring sugar level of patient with glucometer at hospital — Stock Photo
    Close-up of doctor measuring sugar level of patient with glucometer at hospital
    Blood bag on weighing scale machine in blood bank — Stock Photo
    Blood bag on weighing scale machine in blood bank
    Neutrophil white blood cells, digital illustration. — Stock Photo
    Neutrophil white blood cells, digital illustration.
    Close-up of test tube in rack at blood bank — Stock Photo
    Close-up of test tube in rack at blood bank
    Crop unrecognizable plus size female athlete with bottle of aqua watching heart rate on wearable tracker during workout on urban stairs — Stock Photo
    Crop unrecognizable plus size female athlete with bottle of aqua watching heart rate on wearable tracker during workout on urban stairs
    Illustration of realistic human heart with 3 bypasses. — Stock Photo
    Illustration of realistic human heart with 3 bypasses.