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    Activated platelets in blood vessel — Stock Photo
    Activated platelets in blood vessel
    Top view of crop unrecognizable doctor measuring blood oxygen of patient with heart rate monitor at table with stethoscope in clinic — Stock Photo
    Top view of crop unrecognizable doctor measuring blood oxygen of patient with heart rate monitor at table with stethoscope in clinic
    Brown Adenovirus particles, colored digital 3d illustration. — Stock Photo
    Brown Adenovirus particles, colored digital 3d illustration.
    Paramedics examining injured girl on street — Stock Photo
    Paramedics examining injured girl on street
    From above of crop female nurse in protective gloves with bag of blood in hand working with patient during procedure of blood donation in modern medical center — Stock Photo
    From above of crop female nurse in protective gloves with bag of blood in hand working with patient during procedure of blood donation in modern medical center
    Digital artwork of T-lymphocyte cells attacking red cancer cell. — Stock Photo
    Digital artwork of T-lymphocyte cells attacking red cancer cell.
    Human structural anatomy — Stock Photo
    Human structural anatomy
    Illustration of a dendritic cell (centre, purple) activating T-cells (teal). Dendritic cells recognise viruses and present information about their antigens to T-cells — Stock Photo
    Illustration of a dendritic cell (centre, purple) activating T-cells (teal). Dendritic cells recognise viruses and present information about their antigens to T-cells
    Digital illustration of trypanosome protozoan parasites causing sleeping sickness transmitted by blood. — Stock Photo
    Digital illustration of trypanosome protozoan parasites causing sleeping sickness transmitted by blood.
    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
    Person donating blood — Stock Photo
    Person donating blood
    Female anatomy showing vascular system, digital illustration. — Stock Photo
    Female anatomy showing vascular system, digital illustration.
    Male abdominal blood vessels, digital illustration. — Stock Photo
    Male abdominal blood vessels, digital illustration.
    Laboratory technician analyzing chemical solution in blood bank — Stock Photo
    Laboratory technician analyzing chemical solution in blood bank
    Close-up shot of delicious Pudding of millet with red oranges — Stock Photo
    Close-up shot of delicious Pudding of millet with red oranges
    Colored illustration of mosquito pest on skin. — Stock Photo
    Colored illustration of mosquito pest on skin.
    Plasmodium malariae protozoan and red blood cells in blood vessel, computer illustration. — Stock Photo
    Plasmodium malariae protozoan and red blood cells in blood vessel, computer illustration.
    Male abdominal blood vessels, digital illustration. — Stock Photo
    Male abdominal blood vessels, digital illustration.
    Red blood cells — Stock Photo
    Red blood cells
    Red blood cells and leukocytes in cross-section of blood vessel, digital illustration. — Stock Photo
    Red blood cells and leukocytes in cross-section of blood vessel, digital illustration.
    From above of relaxed young female in protective mask with smartphone sitting in medical chair during blood donation in modern hospital — Stock Photo
    From above of relaxed young female in protective mask with smartphone sitting in medical chair during blood donation in modern hospital
    Paramedics examining injured woman on street — Stock Photo
    Paramedics examining injured woman on street
    Brain's blood supply — Stock Photo
    Brain's blood supply
    Vascular system of female upper body, computer illustration. — Stock Photo
    Vascular system of female upper body, computer illustration.
    Structure of neutrophil white blood cell, digital illustration. — Stock Photo
    Structure of neutrophil white blood cell, digital illustration.
    Male body silhouette showing heart anatomy, computer illustration. — Stock Photo
    Male body silhouette showing heart anatomy, computer illustration.
    Illustration of stent inside of human fatty artery. — Stock Photo
    Illustration of stent inside of human fatty artery.
    Illustration of red and white blood cells in the bloodstream. — Stock Photo
    Illustration of red and white blood cells in the bloodstream.
    Top view of mosaic or pattern of positive blood tests and syringe over blue background. — Stock Photo
    Top view of mosaic or pattern of positive blood tests and syringe over blue background.
    Bacterial blood infection, digital illustration. — Stock Photo
    Bacterial blood infection, digital illustration.
    Structural anatomy of human arm — Stock Photo
    Structural anatomy of human arm
    Ewe licking clean her newborn lamb — Stock Photo
    Ewe licking clean her newborn lamb
    Colored illustration of cancer cell being attacked by white blood cells. — Stock Photo
    Colored illustration of cancer cell being attacked by white blood cells.
    Neutrophil cells aggregating at site of infection — Stock Photo
    Neutrophil cells aggregating at site of infection
    Nanomachines working on red blood cells, digital illustration. — Stock Photo
    Nanomachines working on red blood cells, digital illustration.
    Laboratory technicians working together in blood bank — Stock Photo
    Laboratory technicians working together in blood bank
    Female anatomy showing vascular system, digital illustration. — Stock Photo
    Female anatomy showing vascular system, digital illustration.
    Human heart, computer illustration — Stock Photo
    Human heart, computer illustration
    Female body with visible heart and cardiovascular system, digital illustration. — Stock Photo
    Female body with visible heart and cardiovascular system, digital illustration.
    Narrowed artery causing atherosclerosis — Stock Photo
    Narrowed artery causing atherosclerosis
    Red blood cells in blood vessel, digital illustration. — Stock Photo
    Red blood cells in blood vessel, digital illustration.
    Petri dishes for DNA sequencing, close-up. — Stock Photo
    Petri dishes for DNA sequencing, close-up.
    Human artery showing artery walls and bloodstream — Stock Photo
    Human artery showing artery walls and bloodstream
    Blood vessel with blood cells — Stock Photo
    Blood vessel with blood cells
    Human nerve structure in cross section, digital illustration. — Stock Photo
    Human nerve structure in cross section, digital illustration.
    Micropipette pipetting blood sample into Petri dish. — Stock Photo
    Micropipette pipetting blood sample into Petri dish.
    Illustration of schistosoma blood fluke flatworm on black background. — Stock Photo
    Illustration of schistosoma blood fluke flatworm on black background.
    Donor blood being separated into component parts in bags. — Stock Photo
    Donor blood being separated into component parts in bags.
    Laboratory technician using a machine in blood bank — Stock Photo
    Laboratory technician using a machine in blood bank
    Atherosclerosis and narrowed artery — Stock Photo
    Atherosclerosis and narrowed artery
    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.
    Transparent female body silhouette with yellow colored spleen, digital illustration. — Stock Photo
    Transparent female body silhouette with yellow colored spleen, digital illustration.
    Senior woman checking blood pressure on a monitor at home — Stock Photo
    Senior woman checking blood pressure on a monitor at home
    Human blood cells — Stock Photo
    Human blood cells
    Human body model showing female anatomy and nervous system, digital 3d render illustration. — Stock Photo
    Human body model showing female anatomy and nervous system, digital 3d render illustration.
    Red blood cells — Stock Photo
    Red blood cells
    Illustration of tick parasite crawling on human skin surface. — Stock Photo
    Illustration of tick parasite crawling on human skin surface.
    Laboratory technician analyzing blood bag in blood bank — Stock Photo
    Laboratory technician analyzing blood bag in blood bank
    Vascular system in male body, computer illustration. — Stock Photo
    Vascular system in male body, computer illustration.
    Skin blood vessel. Coloured scanning electron micrograph (SEM) of a blood vessel (arteriole) in the dermis of the skin. In the blood vessel are red blood cells (erythrocytes, red) which carry oxygen around the body — Stock Photo
    Skin blood vessel. Coloured scanning electron micrograph (SEM) of a blood vessel (arteriole) in the dermis of the skin. In the blood vessel are red blood cells (erythrocytes, red) which carry oxygen around the body