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    Lymphocyte white blood cell in blood smear, digital illustration. — Stock Photo
    Lymphocyte white blood cell in blood smear, digital illustration.
    Tween boy getting temperature taken with an ear thermometer. — Stock Photo
    Tween boy getting temperature taken with an ear thermometer.
    Illustration of antibodies (red and blue) responding to an infection with the new coronavirus SARS-CoV-2 (red) — Stock Photo
    Illustration of antibodies (red and blue) responding to an infection with the new coronavirus SARS-CoV-2 (red)
    Virus being attacked by antibodies — Stock Photo
    Virus being attacked by antibodies
    White blood cell, digital illustration. — Stock Photo
    White blood cell, digital illustration.
    Illustration of silhouette of obese man with visible spleen. — Stock Photo
    Illustration of silhouette of obese man with visible spleen.
    Neck lymph nodes of female body, computer illustration. — Stock Photo
    Neck lymph nodes of female body, computer illustration.
    Digital illustration of senior man anatomy showing lymphatic system. — Stock Photo
    Digital illustration of senior man anatomy showing lymphatic system.
    Neutrophil white blood cell and red blood cells, digital illustration. — Stock Photo
    Neutrophil white blood cell and red blood cells, digital illustration.
    Male silhouette with visible back bones, computer illustration. — Stock Photo
    Male silhouette with visible back bones, computer illustration.
    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
    Transparent female body silhouette with yellow colored spleen, digital illustration. — Stock Photo
    Transparent female body silhouette with yellow colored spleen, digital illustration.
    Abstract male body with visible lymphatic system, digital illustration. — Stock Photo
    Abstract male body with visible lymphatic system, digital illustration.
    Red blood cells and white blood cells — Stock Photo
    Red blood cells and white blood cells
    Dendritic cells of immune system — Stock Photo
    Dendritic cells of immune system
    Cryptosporidium parvum parasite in oocyst form causing of cryptosporidiosis, digital illustration. — Stock Photo
    Cryptosporidium parvum parasite in oocyst form causing of cryptosporidiosis, digital illustration.
    Lymphocyte, monocyte and neutrophil white blood cells in blood smear, digital illustration. — Stock Photo
    Lymphocyte, monocyte and neutrophil white blood cells in blood smear, digital illustration.
    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
    Female body showing skeleton and lymphatic system, digital illustration. — Stock Photo
    Female body showing skeleton and lymphatic system, digital illustration.
    Female upper body lymphatic system, computer illustration. — Stock Photo
    Female upper body lymphatic system, computer illustration.
    Alveolar tissue macrophage, digital illustration. — Stock Photo
    Alveolar tissue macrophage, digital illustration.
    T-lymphocytes attacking a cancer cell — Stock Photo
    T-lymphocytes attacking a cancer cell
    Lymphocyte white blood cell in blood smear, digital illustration. — Stock Photo
    Lymphocyte white blood cell in blood smear, digital illustration.
    Structure of dog lymphatic system with lymph vessels, digital illustration. — Stock Photo
    Structure of dog lymphatic system with lymph vessels, digital illustration.
    Colored digital illustration of parasitic dust mites. — Stock Photo
    Colored digital illustration of parasitic dust mites.
    Colored digital illustration of parasitic dust mites. — Stock Photo
    Colored digital illustration of parasitic dust mites.
    HIV particles in the bloodstream — Stock Photo
    HIV particles in the bloodstream
    Cytotoxic T-cells capturing cancer cells, digital illustration. — Stock Photo
    Cytotoxic T-cells capturing cancer cells, digital illustration.
    Transparent female body with visible lymphatic system, digital illustration. — Stock Photo
    Transparent female body with visible lymphatic system, digital illustration.
    Transparent female body with visible lymphatic system, digital illustration. — Stock Photo
    Transparent female body with visible lymphatic system, digital illustration.
    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.
    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
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    3d illustration of activated platelets and thrombocytes while healing and closure of wound. — Stock Photo
    3d illustration of activated platelets and thrombocytes while healing and closure of wound.
    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
    Digital molecular model of secondary structure of immunoglobulin G antibodies. — Stock Photo
    Digital molecular model of secondary structure of immunoglobulin G antibodies.
    Normal White blood cell — Stock Photo
    Normal White blood cell
    Lymph nodes of male upper body, computer illustration. — Stock Photo
    Lymph nodes of male upper body, computer illustration.
    Female anatomical body with visible lymphatic system, computer illustration. — Stock Photo
    Female anatomical body with visible lymphatic system, computer illustration.
    Immune response to cancer — Stock Photo
    Immune response to cancer
    Cryptosporidium parvum parasite in human body causing cryptosporidiosis, digital illustration. — Stock Photo
    Cryptosporidium parvum parasite in human body causing cryptosporidiosis, digital illustration.
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia. — Stock Photo
    Colored illustration showing abundant lymphoblast cells in human bone marrow smear in acute lymphoblastic leukaemia.
    Digital artwork of white blood cells attacking red illuminated cancer cell. — Stock Photo
    Digital artwork of white blood cells attacking red illuminated cancer cell.
    Neutrophil white blood cells, digital illustration. — Stock Photo
    Neutrophil white blood cells, digital illustration.
    Illustration of antibodies (yellow and blue) responding to an infection with the new coronavirus SARS-CoV-2 (red) — Stock Photo
    Illustration of antibodies (yellow and blue) responding to an infection with the new coronavirus SARS-CoV-2 (red)
    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
    Non-activated blood cell fragments platelets, coloured scanning electron micrograph. — Stock Photo
    Non-activated blood cell fragments platelets, coloured scanning electron micrograph.
    3d illustration of white blood cells leukocytes secreting antibodies to destroy allergen in human body. — Stock Photo
    3d illustration of white blood cells leukocytes secreting antibodies to destroy allergen in human body.
    Illustration of antibodies attacking influenza virus. — Stock Photo
    Illustration of antibodies attacking influenza virus.
    Female upper body lymphatic system, computer illustration. — Stock Photo
    Female upper body lymphatic system, computer illustration.
    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
    Lymphocytes attacking viruses — Stock Photo
    Lymphocytes attacking viruses
    Illustration of transparent blue silhouette of male body with colored spleen. — Stock Photo
    Illustration of transparent blue silhouette of male body with colored spleen.
    Transparent male silhouette with colored spleen, computer illustration. — Stock Photo
    Transparent male silhouette with colored spleen, computer illustration.
    3d illustration of activated platelets and thrombocytes while healing and closure of wound. — Stock Photo
    3d illustration of activated platelets and thrombocytes while healing and closure of wound.
    Computer illustration of mast cell secreting biologically active compounds near cancer tumour. — Stock Photo
    Computer illustration of mast cell secreting biologically active compounds near cancer tumour.
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Illustration of silhouette of obese man with visible spleen. — Stock Photo
    Illustration of silhouette of obese man with visible spleen.
    COVID-19 immunity passport on table with technology — Stock Photo
    COVID-19 immunity passport on table with technology
    Digital illustration of cloud of antibodies on black background. — Stock Photo
    Digital illustration of cloud of antibodies on black background.