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    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 artwork of white blood cells attacking red illuminated cancer cell. — Stock Photo
    Digital artwork of white blood cells attacking red illuminated cancer cell.
    Abstract male silhouette with colored spleen, computer illustration. — Stock Photo
    Abstract male silhouette with colored spleen, computer illustration.
    Illustration of antibodies attacking influenza virus. — Stock Photo
    Illustration of antibodies attacking influenza virus.
    Female body with spleen cancer, conceptual computer illustration. — Stock Photo
    Female body with spleen cancer, conceptual computer illustration.
    Structure of dog lymphatic system with lymph vessels, digital illustration. — Stock Photo
    Structure of dog lymphatic system with lymph vessels, digital illustration.
    Anatomical male body showing skeleton and lymphatic system, digital illustration. — Stock Photo
    Anatomical male body showing skeleton and lymphatic system, digital illustration.
    Enlarged lymph nodes in female body, conceptual computer illustration. — Stock Photo
    Enlarged lymph nodes in female body, conceptual computer illustration.
    Digital illustration of senior man anatomy showing lymphatic system. — Stock Photo
    Digital illustration of senior man anatomy showing lymphatic system.
    Abdominal lymph nodes in male body, computer illustration. — Stock Photo
    Abdominal lymph nodes in male body, computer illustration.
    Female body showing skeleton and lymphatic system, digital illustration. — Stock Photo
    Female body showing skeleton and lymphatic system, digital illustration.
    Anatomical male model showing lymphatic system, digital illustration. — Stock Photo
    Anatomical male model showing lymphatic system, digital illustration.
    Structure of eosinophil blood cell — Stock Photo
    Structure of eosinophil blood cell
    Spleen cancer in male body, conceptual computer illustration. — Stock Photo
    Spleen cancer in male body, conceptual computer illustration.
    Cryptosporidium parvum parasites in oocyst form causing of cryptosporidiosis, digital illustration. — Stock Photo
    Cryptosporidium parvum parasites in oocyst form causing of cryptosporidiosis, digital illustration.
    Abstract female model with visible skeleton and lymphatic system, computer illustration. — Stock Photo
    Abstract female model with visible skeleton and lymphatic system, computer illustration.
    Illustration of human silhouette with inflamed spleen. — Stock Photo
    Illustration of human silhouette with inflamed spleen.
    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
    Pathogenic bacteria in the blood stream — Stock Photo
    Pathogenic bacteria in the blood stream
    Illustration of antibodies (y-shaped) responding to an infection with the new coronavirus SARS-CoV-2 — Stock Photo
    Illustration of antibodies (y-shaped) responding to an infection with the new coronavirus SARS-CoV-2
    Dendritic cell, computer illustration. A dendritic cell is a type of white blood cell. It is an antigen-presenting cell (APC), which presents antigens to T lymphocytes. — Stock Photo
    Dendritic cell, computer illustration. A dendritic cell is a type of white blood cell. It is an antigen-presenting cell (APC), which presents antigens to T lymphocytes.
    Macrophage (purple) and cancer cells (red), illustration. — Stock Photo
    Macrophage (purple) and cancer cells (red), illustration.
    3d illustration of red blood cells erythrocytes, white blood cells leukocytes and platelets thrombocytes. — Stock Photo
    3d illustration of red blood cells erythrocytes, white blood cells leukocytes and platelets thrombocytes.
    People in subway of Milan during coronavirus quarantine,COVID-19 lifestyle, Duomo subway station, Lombardy, Italy, Europe — Stock Photo
    People in subway of Milan during coronavirus quarantine,COVID-19 lifestyle, Duomo subway station, Lombardy, Italy, Europe
    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
    Tween boy getting temperature taken with an ear thermometer. — Stock Photo
    Tween boy getting temperature taken with an ear thermometer.
    People in subway of Milan during coronavirus quarantine,COVID-19 lifestyle, Duomo subway station, Lombardy, Italy, Europe — Stock Photo
    People in subway of Milan during coronavirus quarantine,COVID-19 lifestyle, Duomo subway station, Lombardy, Italy, Europe
    Parasitic dust mite on white background, digital illustration. — Stock Photo
    Parasitic dust mite on white background, digital illustration.
    White blood cells — Stock Photo
    White blood cells
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Abstract male body with visible lymphatic system, digital illustration. — Stock Photo
    Abstract male body with visible lymphatic system, digital illustration.
    Structure of dog lymphatic system with lymph vessels, digital illustration. — Stock Photo
    Structure of dog lymphatic system with lymph vessels, digital illustration.
    Coloured scanning electron micrograph of human red blood cells, white blood cells and platelets. — Stock Photo
    Coloured scanning electron micrograph of human red blood cells, white blood cells and platelets.
    Tween boy getting temperature taken with an ear thermometer. — Stock Photo
    Tween boy getting temperature taken with an ear thermometer.
    Abdominal lymph nodes in female body, computer illustration. — Stock Photo
    Abdominal lymph nodes in female body, computer illustration.
    Blue senior female silhouette showing spleen in body. — Stock Photo
    Blue senior female silhouette showing spleen in body.
    T-cells (turquoise) binding to cancer cells (pink), illustration. T-lymphocytes, or T-cells, are a type of white blood cell and components of the body's immune system. They mature in the thymus — Stock Photo
    T-cells (turquoise) binding to cancer cells (pink), illustration. T-lymphocytes, or T-cells, are a type of white blood cell and components of the body's immune system. They mature in the thymus
    3d illustration of red blood cell erythrocyte, white blood cell leukocyte and platelet thrombocyte. — Stock Photo
    3d illustration of red blood cell erythrocyte, white blood cell leukocyte and platelet thrombocyte.
    Lymph nodes of male neck and head, computer illustration. — Stock Photo
    Lymph nodes of male neck and head, computer illustration.
    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.
    Transparent male silhouette with colored spleen, computer illustration. — Stock Photo
    Transparent male silhouette with colored spleen, computer illustration.
    Illustration of senior man silhouette with visible spleen. — Stock Photo
    Illustration of senior man silhouette with visible spleen.
    Antibodies attacking cancer cell, computer illustration — Stock Photo
    Antibodies attacking cancer cell, computer illustration
    Pink colored dust mite, digital illustration. — Stock Photo
    Pink colored dust mite, digital illustration.
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    Colored digital illustration of parasitic dust mites. — Stock Photo
    Colored digital illustration of parasitic dust mites.
    Healthy red and white blood cells — Stock Photo
    Healthy red and white blood cells
    White blood cells — Stock Photo
    White blood cells
    B cell and antibodies, computer illustration — Stock Photo
    B cell and antibodies, computer illustration
    3d illustration of antibodies attacking virus particles. — Stock Photo
    3d illustration of antibodies attacking virus particles.
    Megakaryocyte in human blood, computer illustration. — Stock Photo
    Megakaryocyte in human blood, computer illustration.
    Female upper body lymphatic system, computer illustration. — Stock Photo
    Female upper body lymphatic system, computer illustration.
    Coloured scanning electron micrograph of macrophage white blood cell. — Stock Photo
    Coloured scanning electron micrograph of macrophage white blood cell.
    Digital illustration showing destruction of lymphoblast cells, acute lymphoblastic leukaemia treatment concept. — Stock Photo
    Digital illustration showing destruction of lymphoblast cells, acute lymphoblastic leukaemia treatment concept.
    Antibodies attacking cancer cell, computer illustration — Stock Photo
    Antibodies attacking cancer cell, computer illustration
    Anatomy and body systems of adult female — Stock Photo
    Anatomy and body systems of adult female
    Spleen cancer in male body, conceptual computer illustration. — Stock Photo
    Spleen cancer in male body, conceptual computer illustration.
    Virus being attacked by antibodies — Stock Photo
    Virus being attacked by antibodies
    Illustration of cancer cell being attacked by white blood cells. — Stock Photo
    Illustration of cancer cell being attacked by white blood cells.
    Basophil white blood cell and red blood cells, digital illustration. — Stock Photo
    Basophil white blood cell and red blood cells, digital illustration.