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    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    Human artery showing artery walls and bloodstream — Stock Photo
    Human artery showing artery walls and bloodstream
    Colored scanning electron micrograph of resting T-lymphocytes from human blood sample. — Stock Photo
    Colored scanning electron micrograph of resting T-lymphocytes from human blood sample.
    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.
    3d illustration of lymphocytes attacking cancer cells in human body. — Stock Photo
    3d illustration of lymphocytes attacking cancer cells in human body.
    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.
    Red blood cells on white background, digital illustration. — Stock Photo
    Red blood cells on white background, digital 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
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    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.
    Red blood cells and virus particles, computer illustration. — Stock Photo
    Red blood cells and virus particles, computer illustration.
    Lymphocyte white blood cells in human lymphatic system, digital illustration. — Stock Photo
    Lymphocyte white blood cells in human lymphatic system, digital illustration.
    Illustration of human blood cells on black background. — Stock Photo
    Illustration of human blood cells on black background.
    Bacteria amidst blood cells in blood vessel, digital illustration. — Stock Photo
    Bacteria amidst blood cells in blood vessel, digital illustration.
    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.
    Eosinophil white blood cells in blood vessel, digital illustration showing lobed nuclei. — Stock Photo
    Eosinophil white blood cells in blood vessel, digital illustration showing lobed nuclei.
    Coronavirus infection, conceptual illustration. — Stock Photo
    Coronavirus infection, conceptual illustration.
    Healthy red and white blood cells — Stock Photo
    Healthy red and white blood cells
    Blood vessel with blood cells — Stock Photo
    Blood vessel with blood cells
    Red blood cells, digital illustration. — Stock Photo
    Red blood cells, digital illustration.
    Coloured scanning electron micrograph (SEM) of human myeloid white blood cells found in bone marrow. — Stock Photo
    Coloured scanning electron micrograph (SEM) of human myeloid white blood cells found in bone marrow.
    Blood clot structure — Stock Photo
    Blood clot structure
    Activated platelet cells — Stock Photo
    Activated platelet cells
    Artery partially blocked by an atheroma — Stock Photo
    Artery partially blocked by an atheroma
    Plasmodium malariae protozoa in blood vessel, computer illustration. — Stock Photo
    Plasmodium malariae protozoa in blood vessel, computer illustration.
    Cytotoxic T-cells capturing cancer cells, digital illustration. — Stock Photo
    Cytotoxic T-cells capturing cancer cells, digital illustration.
    Computer illustration showing different stages of release of malaria merozoites from a red blood cell. — Stock Photo
    Computer illustration showing different stages of release of malaria merozoites from a red blood cell.
    Activated platelets in a blood smear with red blood cells, illustration. — Stock Photo
    Activated platelets in a blood smear with red blood cells, illustration.
    3d illustration of red blood cells erythrocytes. — Stock Photo
    3d illustration of red blood cells erythrocytes.
    Illustration of eosinophil white blood cell with purple lobed nuclei. — Stock Photo
    Illustration of eosinophil white blood cell with purple lobed nuclei.
    Plasmodium vivax protozoa inside blood vessel, digital illustration. — Stock Photo
    Plasmodium vivax protozoa inside blood vessel, digital illustration.
    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
    Fat in blood cells blocking blood vessel, digital illustration. — Stock Photo
    Fat in blood cells blocking blood vessel, digital illustration.
    Digital illustration of trypanosome parasites causing Chagas disease in blood vessel. — Stock Photo
    Digital illustration of trypanosome parasites causing Chagas disease in blood vessel.
    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.
    Red blood cells, digital illustration. — Stock Photo
    Red blood cells, digital illustration.
    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.
    Bone marrow cellular structure — Stock Photo
    Bone marrow cellular structure
    Bag containing donated human blood, placenta and umbilical cord. — Stock Photo
    Bag containing donated human blood, placenta and umbilical cord.
    Human vein showing tissue stratification — Stock Photo
    Human vein showing tissue stratification
    3d illustration of blood plasma and components of blood flowing from artery. — Stock Photo
    3d illustration of blood plasma and components of blood flowing from artery.
    3d illustration of lymphocytes attacking cancer cell in human body. — Stock Photo
    3d illustration of lymphocytes attacking cancer cell in human body.
    Light micrograph of blood cells (mainly B cells, dark purple) in the liver of a patient with lymphocytic leukaemia. — Stock Photo
    Light micrograph of blood cells (mainly B cells, dark purple) in the liver of a patient with lymphocytic leukaemia.
    Protozoan Plasmodium malariae inside red blood cell in the schizont stage, computer illustration — Stock Photo
    Protozoan Plasmodium malariae inside red blood cell in the schizont stage, computer illustration
    3d illustration of white blood cells leukocytes secreting antibodies in human body. — Stock Photo
    3d illustration of white blood cells leukocytes secreting antibodies in human body.
    Red and white blood cells — Stock Photo
    Red and white blood cells
    Blood clot, computer illustration — Stock Photo
    Blood clot, computer illustration
    Human blood, computer illustration — Stock Photo
    Human blood, computer illustration
    Digital illustration of eosinophil white blood cells with lobed nuclei colored in purple. — Stock Photo
    Digital illustration of eosinophil white blood cells with lobed nuclei colored in purple.
    Diseased blood cells with bacteria, computer illustration. — Stock Photo
    Diseased blood cells with bacteria, computer illustration.
    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.
    Lymphocytes attacking viruses — Stock Photo
    Lymphocytes attacking viruses
    Red blood cell infected with Plasmodium sp. parasites (at schizont stage) causing malaria, computer illustration. — Stock Photo
    Red blood cell infected with Plasmodium sp. parasites (at schizont stage) causing malaria, computer illustration.
    White blood cell — Stock Photo
    White blood cell
    Artery partially blocked by atheroma — Stock Photo
    Artery partially blocked by atheroma
    Resting T lymphocytes. Coloured scanning electron micrograph (SEM) of resting T lymphocytes from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system — Stock Photo
    Resting T lymphocytes. Coloured scanning electron micrograph (SEM) of resting T lymphocytes from a human blood sample. T lymphocytes, or T cells, are a type of white blood cell and components of the body's immune system
    Pyoderma skin disease — Stock Photo
    Pyoderma skin disease
    Cancer cells with blood vessel formation — Stock Photo
    Cancer cells with blood vessel formation
    Panoramic illustration of blood vessel with eosinophilia with numerous eosinophils white blood cells, anti-parasite immune system. — Stock Photo
    Panoramic illustration of blood vessel with eosinophilia with numerous eosinophils white blood cells, anti-parasite immune system.