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    Spleen cancer in male body, conceptual computer illustration. — Stock Photo
    Spleen cancer in male body, conceptual computer illustration.
    Illustration of silhouette of obese man with visible spleen. — Stock Photo
    Illustration of silhouette of obese man with visible spleen.
    Lymphatic system with lymphatic nodes — Stock Photo
    Lymphatic system with lymphatic nodes
    Lymphocyte white blood cell in blood smear, digital illustration. — Stock Photo
    Lymphocyte white blood cell in blood smear, digital illustration.
    Froghopper nymph building defensive foam structure on plant. — Stock Photo
    Froghopper nymph building defensive foam structure on plant.
    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
    Close-up of millipede in defensive spiral position on wild plant. — Stock Photo
    Close-up of millipede in defensive spiral position on wild plant.
    Illustration of transparent blue silhouette of male body with colored spleen. — Stock Photo
    Illustration of transparent blue silhouette of male body with colored spleen.
    Portrait of confident female boxer sitting on rope in boxing ring — Stock Photo
    Portrait of confident female boxer sitting on rope in boxing ring
    Coloured scanning electron micrograph of 293T cell infected with human immunodeficiency virus. — Stock Photo
    Coloured scanning electron micrograph of 293T cell infected with human immunodeficiency virus.
    3d illustration of cancer cell attacked and killed by lymphocytes. — Stock Photo
    3d illustration of cancer cell attacked and killed by lymphocytes.
    Front view close up of a middle aged Caucasian male instructor giving self defence training in a boxing gym demonstrating a hold on a young mixed race man, while another young man looks on — Stock Photo
    Front view close up of a middle aged Caucasian male instructor giving self defence training in a boxing gym demonstrating a hold on a young mixed race man, while another young man looks on
    Mid section of karate player performing karate stance in fitness studio — Stock Photo
    Mid section of karate player performing karate stance in fitness studio
    Human cell infected with Simian Immunodeficiency Virus from sooty mangabey, colored scanning electron micrograph. — Stock Photo
    Human cell infected with Simian Immunodeficiency Virus from sooty mangabey, colored scanning electron micrograph.
    Illustration of transparent gray silhouette of male body with colored spleen. — Stock Photo
    Illustration of transparent gray silhouette of male body with colored spleen.
    High angle side 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 side view of a focused teenage mixed race female judoka wearing blue judogi, kneeling on mats in the gym before judo training.
    Front view of a middle aged Caucasian male instructor giving self defence training in a boxing gym demonstrating a hold on a lying young mixed race man, while another young man looks on — Stock Photo
    Front view of a middle aged Caucasian male instructor giving self defence training in a boxing gym demonstrating a hold on a lying young mixed race man, while another young man looks on
    Monocyte and lymphocyte white blood cells in blood smear, digital illustration. — Stock Photo
    Monocyte and lymphocyte white blood cells in blood smear, digital illustration.
    Female boxer practicing with trainer at fitness studio — Stock Photo
    Female boxer practicing with trainer at fitness studio
    Female boxer practicing with trainer at fitness studio — Stock Photo
    Female boxer practicing with trainer at fitness studio
    Man in defensive pose, computer illustration — Stock Photo
    Man in defensive pose, computer illustration
    Thoughtful female boxer sitting on rope in boxing ring — Stock Photo
    Thoughtful female boxer sitting on rope in boxing ring
    Front view mid section of judoka wearing blue judogi, warming up before a training in a gym, striking a pose, punching the air. — Stock Photo
    Front view mid section of judoka wearing blue judogi, warming up before a training in a gym, striking a pose, punching the air.
    Structure of dog lymphatic system with lymph vessels, digital illustration. — Stock Photo
    Structure of dog lymphatic system with lymph vessels, digital illustration.
    Man practicing with kung fu fan in fitness studio. — Stock Photo
    Man practicing with kung fu fan in fitness studio.
    Young adult karate player performing karate stance in fitness studio — Stock Photo
    Young adult karate player performing karate stance in fitness studio
    Activated macrophage attacking bacteria — Stock Photo
    Activated macrophage attacking bacteria
    Portrait of boxer performing boxing stance in fitness studio — Stock Photo
    Portrait of boxer performing boxing stance in fitness studio
    Structure of dog lymphatic system with lymph vessels, cropped, digital illustration. — Stock Photo
    Structure of dog lymphatic system with lymph vessels, cropped, digital illustration.
    Illustration of spleen in male body silhouette on black background. — Stock Photo
    Illustration of spleen in male body silhouette on black background.
    Illustration of silhouette of obese man with visible spleen. — Stock Photo
    Illustration of silhouette of obese man with visible spleen.
    Karate fighter training martial arts in fitness studio. — Stock Photo
    Karate fighter training martial arts 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
    Kung fu fighter practicing with long pole in fitness studio. — Stock Photo
    Kung fu fighter practicing with long pole in fitness studio.
    Coloured scanning electron micrograph of macrophage white blood cell. — Stock Photo
    Coloured scanning electron micrograph of macrophage white blood cell.
    Side view of a mixed race male judo coach and teenage mixed race male judoka, wearing blue and white judogi, practicing judo during a training in a gym. — Stock Photo
    Side view of a mixed race male judo coach and teenage mixed race male judoka, wearing blue and white judogi, practicing judo during a training in a gym.
    Boxer in helmet performing boxing stance in fitness studio — Stock Photo
    Boxer in helmet performing boxing stance in fitness studio
    Kung fu fighter practicing with long pole in fitness studio. — Stock Photo
    Kung fu fighter practicing with long pole in fitness studio.
    The old city wall in Cartagena, Bolivar, Colombia — Stock Photo
    The old city wall in Cartagena, Bolivar, Colombia
    Structure of dog lymphatic system with lymph vessels, cropped, digital illustration. — Stock Photo
    Structure of dog lymphatic system with lymph vessels, cropped, digital illustration.
    Depressed boxer posing after defeat in locker room — Stock Photo
    Depressed boxer posing after defeat in locker room
    White blood cell structure — Stock Photo
    White blood cell structure
    Nanobot attacking virus, conceptual digital illustration. — Stock Photo
    Nanobot attacking virus, conceptual digital illustration.
    Boxer with gumshield performing boxing stance in fitness studio — Stock Photo
    Boxer with gumshield performing boxing stance in fitness studio
    Rear view of a teenage mixed race female judoka wearing blue judogi, warming up before a training in a gym, striking a pose, punching the air. — Stock Photo
    Rear view of a teenage mixed race female judoka wearing blue judogi, warming up before a training in a gym, striking a pose, punching the air.
    Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is red. Mitochondria (orange) in the cell's cytoplasm produce energy for the cell. Lysosomes (black) contain enzymes for digesting foreign particles. — Stock Photo
    Macrophage. Coloured transmission electron micrograph (TEM) of a macrophage cell. The cell's nucleus is red. Mitochondria (orange) in the cell's cytoplasm produce energy for the cell. Lysosomes (black) contain enzymes for digesting foreign particles.
    Illustration of silhouette of obese man with visible spleen. — Stock Photo
    Illustration of silhouette of obese man with visible spleen.
    Illustration of spleen cancer in male body silhouette on black background. — Stock Photo
    Illustration of spleen cancer in male body silhouette on black background.
    Boxer with gumshield performing boxing stance in fitness studio — Stock Photo
    Boxer with gumshield performing boxing stance in fitness studio
    Coloured scanning electron micrograph of 293T cell infected with human immunodeficiency virus. — Stock Photo
    Coloured scanning electron micrograph of 293T cell infected with human immunodeficiency virus.
    Side view of a teenage Caucasian female judoka wearing blue judogi, kneeling and bowing on mats in the gym before judo training. — Stock Photo
    Side view of a teenage Caucasian female judoka wearing blue judogi, kneeling and bowing on mats in the gym before judo training.
    Kung fu fighter practicing with wooden dummy in fitness studio. — Stock Photo
    Kung fu fighter practicing with wooden dummy in fitness studio.
    Structure of dog lymphatic system with lymph vessels, digital illustration. — Stock Photo
    Structure of dog lymphatic system with lymph vessels, digital illustration.
    Front view mid section of judoka standing on gym mats, tying up the yellow belt of blue judogi. — Stock Photo
    Front view mid section of judoka standing on gym mats, tying up the yellow belt of blue judogi.
    Coloured scanning electron micrograph of 293T cell infected with human immunodeficiency virus. — Stock Photo
    Coloured scanning electron micrograph of 293T cell infected with human immunodeficiency virus.
    Tired female boxer leaning on boxing ring in fitness studio — Stock Photo
    Tired female boxer leaning on boxing ring in fitness studio
    Blue senior female silhouette showing spleen in body. — Stock Photo
    Blue senior female silhouette showing spleen in body.
    Neutrophil white blood cell and red blood cells, digital illustration. — Stock Photo
    Neutrophil white blood cell and red blood cells, digital illustration.
    Side view of a mixed race male judo coach and teenage mixed race male judoka wearing blue and white judogi, practicing judo during a training in a gym. — Stock Photo
    Side view of a mixed race male judo coach and teenage mixed race male judoka wearing blue and white judogi, practicing judo during a training in a gym.