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    3d illustration of antibodies attacking virus particles. — Stock Photo
    3d illustration of antibodies attacking virus particles.
    Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is blue. Mitochondria (cyan)) in the cell's cytoplasm produce energy for the cell. Lysosomes (red) contain enzymes for digesting foreign particles. M — Stock Photo
    Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is blue. Mitochondria (cyan)) in the cell's cytoplasm produce energy for the cell. Lysosomes (red) contain enzymes for digesting foreign particles. M
    Digital molecular model of secondary structure of immunoglobulin G antibodies. — Stock Photo
    Digital molecular model of secondary structure of immunoglobulin G antibodies.
    Dendritic cell, illustration. Dendritic cells are a component of the body's immune system. The cell gets it name from the long membrane extensions off the cell body, which look like the dendrites of a nerve cell — Stock Photo
    Dendritic cell, illustration. Dendritic cells are a component of the body's immune system. The cell gets it name from the long membrane extensions off the cell body, which look like the dendrites of a nerve cell
    Active platelets in human blood with erythrocytes and leukocytes, computer illustration. — Stock Photo
    Active platelets in human blood with erythrocytes and leukocytes, computer illustration.
    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.
    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.
    Illustration of eosinophil white blood cell with purple lobed nuclei. — Stock Photo
    Illustration of eosinophil white blood cell with purple lobed nuclei.
    Biotechnology or biotech, concept of creation, division and cellular development. High organic technology with productive purposes — Stock Photo
    Biotechnology or biotech, concept of creation, division and cellular development. High organic technology with productive purposes
    Human immunodeficiency virus structure — Stock Photo
    Human immunodeficiency virus structure
    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
    Illustration of clot of human blood cells. — Stock Photo
    Illustration of clot of human blood cells.
    Illustration of human blood cells on black background. — Stock Photo
    Illustration of human blood cells on black background.
    B-lymphocyte cells, computer illustration — Stock Photo
    B-lymphocyte cells, computer illustration
    Lymphocytes attacking a cancer cell — Stock Photo
    Lymphocytes attacking a cancer cell
    Antibodies attacking cancer cell, computer illustration — Stock Photo
    Antibodies attacking cancer cell, computer illustration
    Structure of white blood cell — Stock Photo
    Structure of white blood cell
    Illustration of person being vaccinated against Covid-19. injection has stimulated production of different antibodies against proteins on SARS-CoV-2 virus causes Covid-19 — Stock Photo
    Illustration of person being vaccinated against Covid-19. injection has stimulated production of different antibodies against proteins on SARS-CoV-2 virus causes Covid-19
    Illustration of antibodies against SARS-CoV-2 virus that causes Covid-19 inside person wearing face mask. antibodies have been produced by body after vaccination, giving recipient immunity to disease — Stock Photo
    Illustration of antibodies against SARS-CoV-2 virus that causes Covid-19 inside person wearing face mask. antibodies have been produced by body after vaccination, giving recipient immunity to disease
    Antibodies (y-shaped) responding to an infection with the new coronavirus SARS-CoV-2 and destruction of the virus, conceptual illustration — Stock Photo
    Antibodies (y-shaped) responding to an infection with the new coronavirus SARS-CoV-2 and destruction of the virus, conceptual illustration
    Dendritic cells of immune system — Stock Photo
    Dendritic cells of immune system
    Digital artwork of T-lymphocyte cells attacking red cancer cell. — Stock Photo
    Digital artwork of T-lymphocyte cells attacking red cancer cell.
    Illustration of antibodies against SARS-CoV-2 virus that causes Covid-19 inside person wearing face mask. antibodies have been produced by body after vaccination, giving recipient immunity to disease — Stock Photo
    Illustration of antibodies against SARS-CoV-2 virus that causes Covid-19 inside person wearing face mask. antibodies have been produced by body after vaccination, giving recipient immunity to disease
    Leucocyte cell capturing harmful bacteria, computer illustration. — Stock Photo
    Leucocyte cell capturing harmful bacteria, computer illustration.
    Antibody blocking programmed cell death, illustration. — Stock Photo
    Antibody blocking programmed cell death, illustration.
    Female doctor performing allergy skin prick test on little boy with mother in immunologist office. — Stock Photo
    Female doctor performing allergy skin prick test on little boy with mother in immunologist office.
    Illustration of a dendritic cell, a type of white blood cell that is a component of the body's immune system. They are antigen presenting cells (APCs), that is, they present pathogens or foreign molecules (antigens) to other cells of immune system — Stock Photo
    Illustration of a dendritic cell, a type of white blood cell that is a component of the body's immune system. They are antigen presenting cells (APCs), that is, they present pathogens or foreign molecules (antigens) to other cells of immune system
    Illustration of clot of human blood cells. — Stock Photo
    Illustration of clot of human blood cells.
    Digital artwork of T-lymphocyte cells attacking red cancer cell. — Stock Photo
    Digital artwork of T-lymphocyte cells attacking red cancer cell.
    B-lymphocyte cells, computer illustration — Stock Photo
    B-lymphocyte cells, computer illustration
    Structure and shape of basophil — Stock Photo
    Structure and shape of basophil
    Illustration of eosinophil white blood cell with purple lobed nuclei. — Stock Photo
    Illustration of eosinophil white blood cell with purple lobed nuclei.
    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.
    Lymphocyte white blood cell in human lymphatic system, digital illustration. — Stock Photo
    Lymphocyte white blood cell in human lymphatic system, digital illustration.
    White blood cells, digital illustration. — Stock Photo
    White blood cells, digital illustration.
    Activated T lymphocytes and red blood cells on scanning electron micrograph. — Stock Photo
    Activated T lymphocytes and red blood cells on scanning electron micrograph.
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    Digital artwork of white blood cells attacking red illuminated cancer cell. — Stock Photo
    Digital artwork of white blood cells attacking red illuminated cancer cell.
    Colored scanning electron micrograph of activated T lymphocyte from human blood sample. — Stock Photo
    Colored scanning electron micrograph of activated T lymphocyte from human blood sample.
    Molecular models of antibody structures, digital illustration. — Stock Photo
    Molecular models of antibody structures, digital illustration.
    Illustration of eosinophil white blood cell with purple lobed nuclei. — Stock Photo
    Illustration of eosinophil white blood cell with purple lobed nuclei.
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    Basophil white blood cell, digital illustration. — Stock Photo
    Basophil white blood cell, digital illustration.
    Illustration of malaria infected blood cells. — Stock Photo
    Illustration of malaria infected blood cells.
    Computer illustration of neutrophil white blood cell chasing bacteria in blood stream. — Stock Photo
    Computer illustration of neutrophil white blood cell chasing bacteria in blood stream.
    Illustration of a dendritic cell, a type of white blood cell that is a component of the body's immune system — Stock Photo
    Illustration of a dendritic cell, a type of white blood cell that is a component of the body's immune system
    T lymphocyte (orange) attached to a cancer cell (blue), illustration. T lymphocytes are a type of white blood cell which matures in the thymus — Stock Photo
    T lymphocyte (orange) attached to a cancer cell (blue), illustration. T lymphocytes are a type of white blood cell which matures in the thymus
    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.
    Neutrophil white blood cells, digital illustration. — Stock Photo
    Neutrophil white blood cells, digital illustration.
    Digital artwork of white blood cells attacking red illuminated cancer cell. — Stock Photo
    Digital artwork of white blood cells attacking red illuminated cancer cell.
    Man in defensive pose, computer illustration — Stock Photo
    Man in defensive pose, computer illustration
    T lymphocyte (orange) attached to a cancer cell (blue), illustration. T lymphocytes are a type of white blood cell which matures in the thymus — Stock Photo
    T lymphocyte (orange) attached to a cancer cell (blue), illustration. T lymphocytes are a type of white blood cell which matures in the thymus
    T-cell receptor-MHC-antigen complex — Stock Photo
    T-cell receptor-MHC-antigen complex
    Structure of white blood cell — Stock Photo
    Structure of white blood cell
    B-lymphocyte cells, computer illustration — Stock Photo
    B-lymphocyte cells, computer illustration
    Activated macrophage attacking bacteria — Stock Photo
    Activated macrophage attacking bacteria
    Female immunologist performing skin prick allergy testing on boy for possible allergen. — Stock Photo
    Female immunologist performing skin prick allergy testing on boy for possible allergen.
    Antibodies attacking virus particle, 3d illustration — Stock Photo
    Antibodies attacking virus particle, 3d illustration
    Illustration of an antibody, or immunoglobulin. This y-shaped molecule has two arms that can bind to specific antigens, for instance viral or bacterial proteins. In doing this they mark the antigen for destruction by phagocytes, white blood cells tha — Stock Photo
    Illustration of an antibody, or immunoglobulin. This y-shaped molecule has two arms that can bind to specific antigens, for instance viral or bacterial proteins. In doing this they mark the antigen for destruction by phagocytes, white blood cells tha