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    Cardiovascular system in male body, computer illustration. — Stock Photo
    Cardiovascular system in male body, computer illustration.
    Realistic human heart model on black background, computer illustration. — Stock Photo
    Realistic human heart model on black background, computer illustration.
    Red Cabbage Watercress and Blood Orange Salad with Blood orange dressing — Stock Photo
    Red Cabbage Watercress and Blood Orange Salad with Blood orange dressing
    Blood pressure and circulatory system — Stock Photo
    Blood pressure and circulatory system
    Laboratory technician placing plasma bags in cabinet at blood bank — Stock Photo
    Laboratory technician placing plasma bags in cabinet at blood bank
    Colored scanning electron micrograph of red blood cells. — Stock Photo
    Colored scanning electron micrograph of red blood cells.
    Measuring oxygen saturation in blood with pulse oximeter. — Stock Photo
    Measuring oxygen saturation in blood with pulse oximeter.
    Nanobot in bloodstream with red erythrocytes, digital illustration. — Stock Photo
    Nanobot in bloodstream with red erythrocytes, digital illustration.
    Nurse smiling and taking blood pressure of senior woman. — Stock Photo
    Nurse smiling and taking blood pressure of senior woman.
    Paramedics examining injured girl on street — Stock Photo
    Paramedics examining injured girl on street
    T-lymphocytes attacking a cancer cell — Stock Photo
    T-lymphocytes attacking a cancer cell
    Cropped shot of physician using stethoscope on patient's hand — Stock Photo
    Cropped shot of physician using stethoscope on patient's hand
    Inflamed heart in human silhouette, computer illustration. — Stock Photo
    Inflamed heart in human silhouette, computer illustration.
    Parasitic louse on human head skin, digital illustration. — Stock Photo
    Parasitic louse on human head skin, digital illustration.
    Laboratory technicians analyzing blood sample in blood bank — Stock Photo
    Laboratory technicians analyzing blood sample in blood bank
    Illustration of human silhouette with painful heart. — Stock Photo
    Illustration of human silhouette with painful heart.
    Doctor giving young girl finger prick test. — Stock Photo
    Doctor giving young girl finger prick test.
    Structure and shape of basophil — Stock Photo
    Structure and shape of basophil
    Red blood cells and white blood cells — Stock Photo
    Red blood cells and white blood cells
    Digital artwork of white blood cells attacking red illuminated cancer cell. — Stock Photo
    Digital artwork of white blood cells attacking red illuminated cancer cell.
    Cropped shot of doctor working with blood transfusion machine in hospital — Stock Photo
    Cropped shot of doctor working with blood transfusion machine in hospital
    3d illustration of cancer cell attacked and killed by lymphocytes. — Stock Photo
    3d illustration of cancer cell attacked and killed by lymphocytes.
    Anatomical model of internal organs with cross section on white background. — Stock Photo
    Anatomical model of internal organs with cross section on white 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.
    Veins in transparent dog body, anatomical computer illustration. — Stock Photo
    Veins in transparent dog body, anatomical computer illustration.
    Plasmodium malariae protozoa in blood vessel, computer illustration. — Stock Photo
    Plasmodium malariae protozoa in blood vessel, computer illustration.
    Doctor separating donor blood in blood bags into component parts. — Stock Photo
    Doctor separating donor blood in blood bags into component parts.
    Red blood cells and blood vessel — Stock Photo
    Red blood cells and blood vessel
    Person donating blood — Stock Photo
    Person donating blood
    Laboratory technician using a display monitor in blood bank — Stock Photo
    Laboratory technician using a display monitor in blood bank
    Illustration of human heart anatomy on blue background. — Stock Photo
    Illustration of human heart anatomy on blue background.
    Senior woman with diabetes using blood glucose meter on finger — Stock Photo
    Senior woman with diabetes using blood glucose meter on finger
    Closeup view of blood orange drink with ice cubes — Stock Photo
    Closeup view of blood orange drink with ice cubes
    Red sea water of Hormuz Island — Stock Photo
    Red sea water of Hormuz Island
    Whole and half blood oranges — Stock Photo
    Whole and half blood oranges
    Group of surgeons performing operation in operation theater of hospital — Stock Photo
    Group of surgeons performing operation in operation theater of hospital
    Ruptured venule running through fatty tissue — Stock Photo
    Ruptured venule running through fatty tissue
    Senior mixed race man at home taking his blood pressure and writing it down. senior healthcare at home during quarantine lockdown. — Stock Photo
    Senior mixed race man at home taking his blood pressure and writing it down. senior healthcare at home during quarantine lockdown.
    Mature male doctor processing donor blood in bags. — Stock Photo
    Mature male doctor processing donor blood in bags.
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    Close-up of laboratory technician working in blood bank — Stock Photo
    Close-up of laboratory technician working in blood bank
    Human heart against blue background, illustration. — Stock Photo
    Human heart against blue background, illustration.
    Healthy Red blood cells — Stock Photo
    Healthy Red blood cells
    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
    Parasitic adult Ticks — Stock Photo
    Parasitic adult Ticks
    Illustration of senior man silhouette with visible heart. — Stock Photo
    Illustration of senior man silhouette with visible heart.
    Human vein showing tissue stratification — Stock Photo
    Human vein showing tissue stratification
    Plasmodium malariae protozoa in blood vessel, computer illustration. — Stock Photo
    Plasmodium malariae protozoa in blood vessel, computer illustration.
    3d digital illustration of narrowed blood vessel. — Stock Photo
    3d digital illustration of narrowed blood vessel.
    Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is brown. Mitochondria (orange) in the cell's cytoplasm produce energy for the cell. Lysosomes (blue) contain enzymes for digesting foreign particles — Stock Photo
    Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is brown. Mitochondria (orange) in the cell's cytoplasm produce energy for the cell. Lysosomes (blue) contain enzymes for digesting foreign particles
    Digital illustration of nit egg of human head louse attached to human hair. — Stock Photo
    Digital illustration of nit egg of human head louse attached to human hair.
    Transparent female body silhouette with yellow colored spleen, digital illustration. — Stock Photo
    Transparent female body silhouette with yellow colored spleen, digital illustration.
    Illustration of fat inside of human artery. — Stock Photo
    Illustration of fat inside of human artery.
    Skull showing brain and neurons, coloured X-ray. — Stock Photo
    Skull showing brain and neurons, coloured X-ray.
    Protozoa Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration. — Stock Photo
    Protozoa Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration.
    Computer generated image of capsules modeled on sample of fluoxetine — Stock Photo
    Computer generated image of capsules modeled on sample of fluoxetine
    Blood agar in Petri dish on blue background. — Stock Photo
    Blood agar in Petri dish on blue background.
    Erythrocytes and leukocytes blood cells in human blood vessel, digital illustration. — Stock Photo
    Erythrocytes and leukocytes blood cells in human blood vessel, digital illustration.
    Close-up of pipetting blood sample into microcentrifuge tubes. — Stock Photo
    Close-up of pipetting blood sample into microcentrifuge tubes.
    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.