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    Blue senior female silhouette showing spleen in body. — Stock Photo
    Blue senior female silhouette showing spleen in body.
    Illustration of antibodies (blue) attaching to a viral (purple) infected cell. Antibodies bind to specific antigens, for instance viral proteins displayed on the surface of infected cells, marking them for destruction by phagocyte immune cells. — Stock Photo
    Illustration of antibodies (blue) attaching to a viral (purple) infected cell. Antibodies bind to specific antigens, for instance viral proteins displayed on the surface of infected cells, marking them for destruction by phagocyte immune cells.
    Activated macrophage attacking bacteria — Stock Photo
    Activated macrophage attacking bacteria
    Structure of dog lymphatic system with lymph vessels, digital illustration. — Stock Photo
    Structure of dog lymphatic system with lymph vessels, digital illustration.
    Boxer in helmet performing boxing stance in fitness studio — Stock Photo
    Boxer in helmet performing boxing stance in fitness studio
    Female boxer practicing with trainer at fitness studio — Stock Photo
    Female boxer practicing with trainer at fitness studio
    Female anatomical figure with detailed spleen, computer illustration. — Stock Photo
    Female anatomical figure with detailed spleen, computer illustration.
    Transparent female body silhouette with yellow colored spleen, digital illustration. — Stock Photo
    Transparent female body silhouette with yellow colored spleen, digital illustration.
    Young adult karate player performing karate stance in fitness studio — Stock Photo
    Young adult karate player performing karate stance in fitness studio
    Kung fu fighter practicing martial arts in fitness studio. — Stock Photo
    Kung fu fighter practicing martial arts in fitness studio.
    Long poles and kung fu spears leaning on wall in martial arts studio. — Stock Photo
    Long poles and kung fu spears leaning on wall in martial arts studio.
    Illustration of cancer cell being attacked by white blood cells. — Stock Photo
    Illustration of cancer cell being attacked by white blood cells.
    Structure of dog lymphatic system with lymph vessels, digital illustration. — Stock Photo
    Structure of dog lymphatic system with lymph vessels, digital illustration.
    Man in defensive pose, computer illustration — Stock Photo
    Man in defensive pose, computer illustration
    Karate fighter training martial arts in fitness studio. — Stock Photo
    Karate fighter training martial arts in fitness studio.
    Basophil white blood cell and red blood cells, digital illustration. — Stock Photo
    Basophil white blood cell and red blood cells, digital illustration.
    Sandbags in rows at the water's edge to prevent erosion of the beach — Stock Photo
    Sandbags in rows at the water's edge to prevent erosion of the beach
    Mid section illustration of spleen in male body silhouette. — Stock Photo
    Mid section illustration of spleen in male body silhouette.
    Basophil white blood cell, digital illustration. — Stock Photo
    Basophil white blood cell, digital illustration.
    Group of friends playing basketball. — Stock Photo
    Group of friends playing basketball.
    3d illustration of lymphocytes attacking cancer cells in human body. — Stock Photo
    3d illustration of lymphocytes attacking cancer cells in human body.
    Antibodies attacking coronavirus particle, illustration. — Stock Photo
    Antibodies attacking coronavirus particle, illustration.
    Colored illustration of cancer cell being attacked by white blood cells. — Stock Photo
    Colored illustration of cancer cell being attacked by white blood cells.
    Confident female boxer performing boxing stance in fitness studio — Stock Photo
    Confident female boxer performing boxing stance in fitness studio
    Blue senior female silhouette showing spleen in body. — Stock Photo
    Blue senior female silhouette showing spleen in body.
    Lymphocyte white blood cell in blood smear, digital illustration. — Stock Photo
    Lymphocyte white blood cell in blood smear, digital illustration.
    White blood cell structure — Stock Photo
    White blood cell structure
    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.
    Side view full body of soldier in camouflage outfit standing on knee before military service with small girl — Stock Photo
    Side view full body of soldier in camouflage outfit standing on knee before military service with small girl
    Portrait of boxer performing boxing stance in fitness studio — Stock Photo
    Portrait of boxer performing boxing stance in fitness studio
    Illustration of senior man silhouette with visible spleen. — Stock Photo
    Illustration of senior man silhouette with visible spleen.
    Coloured scanning electron micrograph of macrophage white blood cell. — Stock Photo
    Coloured scanning electron micrograph of macrophage white blood cell.
    High angle front view of a focused teenage mixed race female judoka wearing blue judogi, kneeling on mats in the gym before judo training. — Stock Photo
    High angle front view of a focused teenage mixed race female judoka wearing blue judogi, kneeling on mats in the gym before judo training.
    Confident female boxer performing boxing stance in fitness studio — Stock Photo
    Confident female boxer performing boxing stance in fitness studio
    Karate player performing karate stance in fitness studio — Stock Photo
    Karate player performing karate stance in fitness studio
    Portrait of karate player performing karate stance in fitness studio — Stock Photo
    Portrait of karate player performing karate stance in fitness studio
    Neutrophil and monocyte white blood cells in blood smear, digital illustration. — Stock Photo
    Neutrophil and monocyte white blood cells in blood smear, digital illustration.
    Man practicing with kung fu fan in fitness studio. — Stock Photo
    Man practicing with kung fu fan in fitness studio.
    Karate fighter practicing with long pole in fitness studio. — Stock Photo
    Karate fighter practicing with long pole in fitness studio.
    T-lymphocytes attacking a cancer cell — Stock Photo
    T-lymphocytes attacking a cancer cell
    Lymphocytes attacking viruses — Stock Photo
    Lymphocytes attacking viruses
    Confident female boxer leaning on boxing ring in fitness studio — Stock Photo
    Confident female boxer leaning on boxing ring in fitness studio
    Front view close up of a teenage Caucasian female judo player wearing blue judogi, kneeling on mats in the gym before judo training. — Stock Photo
    Front view close up of a teenage Caucasian female judo player wearing blue judogi, kneeling on mats in the gym before judo training.
    Bacterial infection spreading in bloodstream — Stock Photo
    Bacterial infection spreading in bloodstream
    Structure of dog lymphatic system with lymph vessels, cropped, digital illustration. — Stock Photo
    Structure of dog lymphatic system with lymph vessels, cropped, digital illustration.
    Judokas practicing judo during a sparring in a gym — Stock Photo
    Judokas practicing judo during a sparring in a gym
    Illustration of silhouette of obese man with visible spleen. — Stock Photo
    Illustration of silhouette of obese man with visible spleen.
    Mid section of karate player performing karate stance in fitness studio — Stock Photo
    Mid section of karate player performing karate stance in fitness studio
    Portrait of karate player performing karate stance in fitness studio — Stock Photo
    Portrait of karate player performing karate stance in fitness studio
    Portrait of a confident teenage Caucasian female judoka wearing blue judogi, standing in the gym with her arms crossed and looking straight into a camera. — Stock Photo
    Portrait of a confident teenage Caucasian female judoka wearing blue judogi, standing in the gym with her arms crossed and looking straight into a camera.
    Pathogenic bacteria in the blood stream — Stock Photo
    Pathogenic bacteria in the blood stream
    Karate fighter training martial arts in fitness studio. — Stock Photo
    Karate fighter training martial arts in fitness studio.
    Basophil white blood cell, digital illustration. — Stock Photo
    Basophil white blood cell, digital illustration.
    Immune response to cancer — Stock Photo
    Immune response to cancer
    Portrait of female boxer with boxing gloves in boxing ring at fitness studio — Stock Photo
    Portrait of female boxer with boxing gloves in boxing ring at fitness studio
    3d illustration of lymphocytes attacking cancer cells in human body. — Stock Photo
    3d illustration of lymphocytes attacking cancer cells in human body.
    3d illustration of cancer cell attacked and killed by lymphocytes. — Stock Photo
    3d illustration of cancer cell attacked and killed by lymphocytes.
    Front view of a mixed race male judo coach and teenage mixed race female judoka, wearing blue and white judogi, practicing judo during a training in a gym. — Stock Photo
    Front view of a mixed race male judo coach and teenage mixed race female judoka, wearing blue and white judogi, practicing judo during a training in a gym.
    Karate player performing karate stance in fitness studio — Stock Photo
    Karate player performing karate stance in fitness studio
    3d rendered illustration of highlighted female spleen. — Stock Photo
    3d rendered illustration of highlighted female spleen.